Updated on 2025/07/16

写真a

 
NISHIHARA Yasushi
 
Organization
Scheduled update Professor
Position
Professor
Profile

[最終学歴]  総合研究大学院大学 数物科学研究科 博士後期課程 中退 (1996年)

[学位]    博士(理学) 総合研究大学院大学 (1997年)

[担当授業科目] (学部) 前期:有機化学 V,基礎有機化学1,自然科学入門(分担),基礎化学実験(分担)

                後期:基礎有機化学1,化学実験 4(分担),化学実験 1(分担),化学ゼミナールB(分担),教養化学実験(分担)

           (大学院前期課程) 前期:有機金属触媒化学

           (大学院後期課程) 前期:合成有機分子化学,動態機能化学演習

 

[専門分野]  有機金属化学,有機合成化学,高分子化学,有機材料化学

[キーワード]遷移金属触媒,結合の活性化,有機ホウ素化学,有機ケイ素化学,有機フッ素化学,有機電界効果トランジスタ,有機薄膜太陽電池

[所属学会] 日本化学会,有機合成化学協会,高分子学会,応用物理学会,錯体化学会,近畿化学協会,ケイ素化学協会,基礎有機化学会,アメリカ化学会

[研究内容] 有機金属錯体触媒を利用した新規有機合成反応の開発と機能性材料への応用

[研究の目標] これまでにない活性や選択性を発現するような新規な有機金属錯体触媒を設計,合成し,新規かつ高選択的な有機合成反応を開発することを研究目的にしています。
その研究過程で多くの海外,国内の研究者との交流を深めながら研究生活(人生)を楽しみたいと考えています。

External link

Degree

  • Doctor (Science) ( 1997.9   The Graduate University for Advanced Studies )

  • Master (Science) ( 1994.3   Hiroshima University )

  • Bachelor (Science) ( 1992.3   Hiroshima University )

Research Interests

  • functional materials

  • organometallic chemistry

  • トランジスタ

  • 有機太陽電池

  • 機能性材料

  • 有機金属化学

  • transistors

  • organic photovoltaics

Research Areas

  • Nanotechnology/Materials / Polymer chemistry

  • Nanotechnology/Materials / Synthetic organic chemistry

  • Nanotechnology/Materials / Functional solid state chemistry

Education

  • The Graduate University for Advanced Studies   数物科学研究科  

    1994.4 - 1996.8

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    Country: Japan

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  • Hiroshima University   大学院理学研究科   化学専攻

    1992.4 - 1994.3

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    Country: Japan

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  • Hiroshima University   理学部   化学科

    1988.4 - 1992.3

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    Country: Japan

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Research History

  • Okayama University   The Research Institute for Interdisciplinary Science   Professor

    2016.4

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    Country:Japan

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  • Okayama University   The Graduate School of Natural Science and Technology

    2010 - 2016

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  • 岡山大学自然科学研究科機能分子化学専攻 准教授

    2007 - 2010

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  • 岡山大学自然科学研究科機能分子化学専攻 助教授

    2005 - 2007

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  • Okayama University   Faculty of Science

    2004 - 2005

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  • Tokyo Institute of Technology   Chemical Resources Laboratory

    1996 - 2004

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  • 日本学術振興会 特別研究員 日本学術振興会特別研究員

    1996

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Professional Memberships

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Committee Memberships

  • 日本化学会   中国四国支部幹事  

    2022.4 - 2024.3   

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  • 有機合成化学協会   中国四国支部 事務局  

    2020.4   

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  • 有機合成化学協会   代議員  

    2018.4 - 2020.3   

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  • 有機合成化学協会   中国四国支部 幹事  

    2018.4 - 2020.3   

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  • 日本化学会   中国四国支部 代議員  

    2016.4 - 2019.3   

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    Committee type:Academic society

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  • 近畿化学協会有機金属部会   幹事  

    2013.4   

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  • 錯体化学会   「Bulletin of Japan Society of Coordination Chemistry (BJSCC)」 編集委員  

    2012.4 - 2021.9   

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  • 錯体化学会   将来計画委員  

    2011.4 - 2020.3   

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  • 高分子学会   中国四国支部 幹事  

    2010.4   

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    Committee type:Academic society

    高分子学会

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Papers

  • From carboxylic acids or their derivatives to amines and ethers: modern decarboxylative approaches for sustainable C-N and C-O bond formation. Reviewed International journal

    Weidan Yan, Tian Tian, Yasushi Nishihara

    Organic & biomolecular chemistry   2025.7

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    Amines and ethers represent essential structural motifs in pharmaceuticals, natural products, organic materials, and catalytic systems. The development of novel, environmentally friendly, and cost-effective strategies for constructing C-N and C-O bonds is therefore of significant importance for the synthesis of these compounds. In recent years, carboxylic acids and their derivatives have emerged as attractive, inexpensive, non-toxic, and readily available synthetic building blocks, serving as promising alternatives to aryl halides. Growing evidence has demonstrated that decarboxylative amination and etherification of carboxylic acid derivatives offer a powerful approach for the synthesis of amines and ethers. These transformations proceed via three principal mechanistic pathways, each offering high atom economy. Specifically, carbanions (or organometallic species) generated through heterolytic decarboxylation can react with suitable electrophiles to form C-heteroatom bonds. In contrast, carbon-centred radicals produced through homolytic decarboxylation can couple with heteroatom-based reagents via radical recombination or oxidative trapping. Additionally, carbocations are typically formed via electrochemical oxidation of carboxylic acids: oxidative decarboxylation first yields a carbon radical, which is then further oxidized at the anode to generate a carbocation. This highly electrophilic intermediate can subsequently be intercepted by heteroatom nucleophiles to construct C-N or C-O bonds. This review highlights recent advances in the field, with a focus on transition metal catalysis, photoredox catalysis, and electrochemical methods for decarboxylative amination and etherification.

    DOI: 10.1039/d5ob00748h

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  • Alkoxy-Substituted Anthrabis(Thiadiazole)-Terthiophene Copolymers for Organic Photovoltaics: A Unique Wavy Backbone Enhances Aggregation, Molecular Order, and Device Efficiency. Reviewed International journal

    Yi Yan, Hiroki Mori, Tomoki Yoshino, Ryuki Inami, Jiaxin Chang, Junqing Gao, Yasushi Nishihara

    Chemistry, an Asian journal   e00678   2025.6

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    Two polymer donors, PATz3T-o6BO and PATz3T-o6HD, incorporating alkoxy-substituted anthra[1,2-c:5,6-c']bis([1,2,5]thiadiazole), were strategically designed and synthesized. The unique wavy backbone of these polymers effectively reduced aggregation, leading to enhanced solubility and significantly improved molecular ordering. Consequently, the PATz3T-o6HD:Y12-based solar cells achieved a power conversion efficiency (PCE) of 7.94%. These findings provide valuable insights into the molecular design of high-performance polymer donors for organic photovoltaics (OPVs).

    DOI: 10.1002/asia.202500678

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  • Vinylene‐Bridged Alkoxyfluorobenzothiadiazole (<scp>FOBTzE</scp>)‐Based Semiconducting Polymers for Enhanced Performance in Non‐Fullerene Organic Photovoltaic Cells Reviewed

    Yi Yan, Hiroki Mori, Ryuchi Hosogi, Hiroki Yamane, Tomoki Yoshino, Yasushi Nishihara

    Journal of Polymer Science   2024.11

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    ABSTRACT

    To mitigate the strong aggregation and limited solubility observed in the previously reported vinylene‐bridged alkoxyfluorobenzothiadiazole (FOBTzE)‐based polymer, PFOE4T, we designed and synthesized PBFOE‐1. This novel semiconducting polymer, based on the FOBTzE framework, incorporates an alkylthienyl‐substituted benzodithiophene (BDT) as the donor unit. PBFOE‐1 demonstrated broad and intense absorption between 300 and 700 nm with a relatively wide bandgap of 1.7 eV. Additionally, PBFOE‐1 features a low HOMO energy level (−5.43 eV) compared to PFOE4T (−5.23 eV), likely due to the incorporation of weakly electron‐donating BDT into the polymer backbone. While the PFOE4T/Y12‐based solar cell yielded a modest power conversion efficiency (PCE) of 4.37%, characterized by a short‐circuit current density (Jsc) of 13.5 mA cm−2, an open‐circuit voltage (Voc) of 0.69 V, and a fill factor (FF) of 0.47, the PBFOE‐1/Y12 cell exhibited a substantially higher PCE of 10.96%. This improvement is reflected in the enhanced Jsc (23.23 mA cm−2), Voc (0.84 V), and FF (0.56). The superior performance of PBFOE‐1 is primarily attributed to its improved solubility and aggregation behavior, promoting a more ordered face‐on orientation and optimal blend morphology.

    DOI: 10.1002/pol.20241036

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    Other Link: https://onlinelibrary.wiley.com/doi/pdf/10.1002/pol.20241036

  • A Highly Efficient Cross‐Coupling Mode via the Release of Small Molecules: Transition Metal‐Catalyzed Unimolecular Fragment Coupling (UFC) Invited Reviewed

    Tian Tian, Shuhei Uei, Zhiping Li, Yasushi Nishihara

    ChemCatChem   2024.9

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    Abstract

    As a recently developed redox‐neutral coupling reaction, transition‐metal‐catalyzed unimolecular fragment coupling (UFC) has been extensively investigated over the past decade. In comparison to conventional cross‐coupling reactions, cross‐electrophilic coupling (XEC) and cross‐dehydrogenative coupling (CDC) protocols eliminate the need for stoichiometric organometallic reagents, reductants, or oxidants. Additionally, it produces only minimal molecular by‐products for the formation of a series of C−C bonds and C−X bonds with high atom efficiency. This review presents a summary and classification of the research progress made over the past decade in this field. The research is classified into four main categories, decarbonylation, decarboxylation, desulfonylation, and deisocyanation, according to the type of small molecule that is liberated from the reaction system. This facilitates the implementation of more practical, straightforward, and expedient reaction operations. It is noteworthy that the reaction employs carbonyl compounds (aldehydes, ketones, carboxylic acid derivatives, etc.), sulfones, and amides, which are typically inexpensive and accessible, as reaction substrates. This groundbreaking synthetic approach has since yielded a plethora of outcomes and novel research avenues in related fields, while also offering benefits to other related fields.

    DOI: 10.1002/cctc.202401190

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  • Thiophene-fused fulminenes (FuDTs): promising platforms for high-mobility organic semiconductors with a zigzag shape Reviewed International journal

    Shohei Kumagai, Takumi Ishida, Shin Kakiuchi, Masakazu Yamagishi, Hiroyasu Sato, Hiroyuki Ishii, Yasushi Nishihara, Toshihiro Okamoto

    Chemical Communications   60 ( 79 )   11152 - 11155   2024.9

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    [8]Thienophenacene analogues offer excellent single-crystal platforms for hole transport owing to their characteristic molecular orbitals and sufficiently small effective masses.

    DOI: 10.1039/d4cc02767a

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  • Palladium-Catalyzed Decarbonylative Nucleophilic Halogenation of Acyl Fluorides and Chlorides: Synthesis of Aryl Halides via Reductive Elimination of the C–X (X = I, Br, and Cl) Bond and Mechanistic Implications Reviewed

    Tian Tian, Myuto Kashihara, Weidan Yan, Yasushi Nishihara

    ACS Catalysis   14 ( 16 )   11905 - 11917   2024.7

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    DOI: 10.1021/acscatal.4c03731

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  • Alkoxy-Substituted Anthrabisthiadiazole–Benzodithiophene-Based Wide-Band-Gap Semiconducting Polymers for High-Performance Non-Fullerene Solar Cells Reviewed

    Hiroki Mori, Ryuchi Hosogi, Yukiya Minagawa, Hiroki Yamane, Yasushi Nishihara

    ACS Applied Polymer Materials   6 ( 7 )   3883 - 3893   2024.3

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    DOI: 10.1021/acsapm.3c03201

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  • Synthesis, Characterization, and Solar Cell Applications of a Non-fused-ring Electron Acceptor Based on Vinylene-bridged Difluorobenzothiadiazole Reviewed

    Hiroki Mori, Natsuki Hasegawa, Tomoki Yoshino, Yasushi Nishihara

    Chemistry Letters   52 ( 10 )   779 - 782   2023.10

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    DOI: 10.1246/cl.230303

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  • Carboazidation of Terminal Alkenes with Trimethylsilyl Azide and Cyclic Ethers Catalyzed by Copper Powder under Oxidative Conditions Reviewed

    Yuichi Ikemoto, Sho Chiba, Zhenyao Li, Qiang Chen, Hiroki Mori, Yasushi Nishihara

    The Journal of Organic Chemistry   88 ( 7 )   4472 - 4480   2023.3

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    DOI: 10.1021/acs.joc.2c03081

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  • Synthesis and solar cell applications of semiconducting polymers based on vinylene-bridged 5-alkoxy-6-fluorobenzo[c][1,2,5]thiadiazole (FOBTzE) Reviewed

    Hiroki Mori, Yuya Asanuma, Ryuchi Hosogi, Yasushi Nishihara

    Polymer Journal   55 ( 4 )   405 - 415   2023.1

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s41428-022-00706-z

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    Other Link: https://www.nature.com/articles/s41428-022-00706-z

  • Nickel-Catalyzed Decarbonylative Reductive Alkylation of Aroyl Fluorides with Alkyl Bromides Reviewed

    Qiang Chen, Jingwen You, Tian Tian, Zhenyao Li, Myuto Kashihara, Hiroki Mori, Yasushi Nishihara

    Organic Letters   24 ( 50 )   9259 - 9263   2022.12

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    DOI: 10.1021/acs.orglett.2c03823

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  • π-Extended Zigzag-Shaped Diphenanthrene-Based p-Type Semiconductors Exhibiting Small Effective Masses Reviewed

    Masato Mitani, Shohei Kumagai, Craig P. Yu, Ayako Oi, Masakazu Yamagishi, Shuhei Nishinaga, Hiroki Mori, Yasushi Nishihara, Daisuke Hashizume, Tadanori Kurosawa, Hiroyuki Ishii, Nobuhiko Kobayashi, Jun Takeya, Toshihiro Okamoto

    Advanced Electronic Materials   8 ( 11 )   2200452 - 2200452   2022.7

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    DOI: 10.1002/aelm.202200452

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/aelm.202200452

  • Recent Advances in C-F Bond Activation of Acyl Fluorides Directed toward Catalytic Transformation by Transition Metals, N-Heterocyclic Carbenes, or Phosphines Invited Reviewed

    Tian Tian, Qiang Chen, Zhiping Li, Yasushi Nishihara

    Synthesis   54 ( 17 )   3667 - 3697   2022.5

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  • Effects of Acyloxy Groups in Anthrabisthiadiazole-Based Semiconducting Polymers on Electronic Properties, Thin-Film Structure, and Solar Cell Performance Reviewed

    Hiroki Mori, Yuki Yamada, Yukiya Minagawa, Natsuki Hasegawa, Yasushi Nishihara

    Bulletin of Chemical Society of Japan   95 ( 6 )   942 - 952   2022.4

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  • Palladium/Copper-Cocatalyzed Arylsilylation of Internal Alkynes with Acyl Fluorides and Silylboranes: Synthesis of Tetrasubstituted Alkenylsilanes by Three-Component Reviewed

    Qiang Chen, Zhenyao Li, Yasushi Nishihara

    Organic Letters   24 ( 1 )   385 - 389   2022.1

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  • Transmetalation of boronic acids and their derivatives: mechanistic elucidation and relevance to catalysis Invited Reviewed

    Kohtaro Osakada, Yasushi Nishihara

    Dalton Transactions   51 ( 3 )   777 - 794   2021.12

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  • Ni-Catalyzed Decarbonylative Alkynylation of Acyl Fluorides with Terminal Alkynes under Copper-Free Conditions Invited Reviewed

    Qiang Chen, Liyan Fu, Jingwen You, Yasushi Nishihara

    Synlett   32 ( 15 )   1560 - 1564   2021.10

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  • Iron-catalysed radical cyclization to synthesize germanium-substituted indolo[2,1-a]isoquinolin-6(5H)-ones and indolin-2-ones Reviewed

    Yani Luo, Tian Tian, Yasushi Nishihara, Leiyang Lv, Zhiping Li

    Chemical Communications   57 ( 73 )   9276 - 9279   2021.8

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  • Formation of trans-Poly(thienylenevinylene) Thin Films by Solid-State Thermal Isomerization Reviewed

    Masayuki Wakioka, Natsumi Yamashita, Hiroki Mori, Richard Murdey, Takafumi Shimoaka, Nobutaka Shioya, Atsushi Wakamiya, Yasushi Nishihara, Takeshi Hasegawa, Fumiyuki Ozawa

    Chemistry of Materials   33 ( 14 )   5631 - 5638   2021.7

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    DOI: 10.1021/acs.chemmater.1c01016

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  • Nickel-Catalyzed Decarbonylative Thioetherification of Acyl Fluorides via C-F Bond Activation Invited Reviewed

    Jingwen You, Qiang Chen, Yasushi Nishihara

    Synthesis   53 ( 17 )   3045 - 3050   2021.4

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    DOI: 10.1055/a-1484-6216

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  • Recent Advances in Transition-metal-catalyzed C-C Bond Formation via C(sp2)-F Bond Cleavage Reviewed

    Liyan Fu, Qiang Chen, Yasushi Nishihara

    Chemical Records   21 ( 12 )   3394 - 3410   2021.4

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  • Palladium-catalyzed decarbonylative and decarboxylative cross-coupling of acyl chlorides with potassium perfluorobenzoates affording unsymmetrical biaryls Reviewed

    Liyan Fu, Jingwen You, Yasushi Nishihara

    Chemical Communications   57 ( 30 )   3696 - 3699   2021.3

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  • Synthesis and reactivity of boryloxorhodium complexes. Relevance to intermolecular transmetalation from boron to Rhodium in Rh-catalyzed reactions Reviewed

    Yasushi Nishihara, Yasuhiro Nishide, Kohtaro Osakada

    Dalton Transactions   50 ( 10 )   3610 - 3615   2021.2

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    <p>The synthesis of a dimeric boryloxorhodium complex having the Rh–O–Bpin scaffold from the reaction of [(cod)Rh(OMe)]2 or [(cod)Rh(OH)]2 with an arylboronate has been achieved. The obtained dirhodium complex is converted...</p>

    DOI: 10.1039/d1dt00440a

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  • Synthesis of 2-Isoxazoline N-Oxides by Copper-Mediated Radical Annulation of Alkenes with α-Nitrobenzyl Bromides Reviewed

    Masayuki Iwasaki, Yuichi Ikemoto, Yasushi Nishihara

    Organic Letters   22 ( 19 )   7577 - 7580   2020.10

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    DOI: 10.1021/acs.orglett.0c02781

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  • Synthesis of Oxygen-Containing Heterocyclic Compounds by Iron-Catalyzed Alkylative Cyclization of Unsaturated Carboxylic Acids and Alcohols Reviewed

    Masayuki Iwasaki, Yasuki Kazao, Takumi Ishida, Yasushi Nishihara

    Organic Letters   22 ( 18 )   7343 - 7347   2020.9

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    DOI: 10.1021/acs.orglett.0c02671

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  • Efficient Synthesis of π-Conjugated Organic Molecules Utilizing Cross─Coupling Reactions and Application to Electronic Devices Invited Reviewed

    Yasushi Nishihara

    J. Syn. Org. Chem. Jpn.   78 ( 9 )   867 - 874   2020.9

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publisher:The Society of Synthetic Organic Chemistry, Japan  

    The development of efficient synthetic methods of π-conjugated compounds by means of cross-coupling reactions are reported. Tetraarylethenes with four different substituents are synthetic targets. The Pt-catalyzed addition of diboron to alkynylsilanes to yield 1-aryl-1-silyl-2,2-diborylethenes with perfect stereoselectivity. Step by step chemoselective Suzuki-Miyaura couplings with aryl halides were performed to give a triarylsilylethene with perfect chemoselectivity. The silyl group was transformed to the aryl group with desilybromination, followed by Suzuki-Miyaura coupling, leading to the successful synthesis of the desired tetraarylated olefin. On the other hand, novel and versatile methods for the synthesis of various phenacene and thienophenacene derivatives by cross-coupling reactions were elucidated for application to organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). As one of representative phenacenes, picene is a polycyclic aromatic hydrocarbon consisting of five fused benzene rings with a W-shape structure, which exhibits high hole mobility. We successfully found the synthetic route of various substituted picenes. In addition, the synthesis of phenanthro [1,2-b : 8,7-b’] dithiophene (PDT) was achieved by replacing two terminal phenyl rings in picene with thiophene rings. The fabricated OFET devices based on C12-PDT-2 displayed a quite high mobility of up to 5.6 cm2 V−1 s−1. In regard to OPV devices, PDT-fluorinated benzothiadiazole (BT) polymers possessing alkyl side chains showed the highest power conversion efficiencies (PCE) of 9.0%.

    DOI: 10.5059/yukigoseikyokaishi.78.867

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    Other Link: https://ndlsearch.ndl.go.jp/books/R000000004-I030651888

  • Synthesis and Physicochemical Properties of 2,7-Disubstituted Phenanthro[2,1-b:7,8-b’]dithiophenes Reviewed

    Zhenfei Ji, Zeliang Cheng, Hiroki Mori, Yasushi Nishihara

    Molecules   25 ( 17 )   3842 - 3842   2020.8

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    We report the design, synthesis, and physicochemical properties of an array of phenanthro[2,1-b:7,8-b’]dithiophene (PDT-2) derivatives by introducing five types of alkyl (CnH2n+1; n = 8, 10, 12, 13, and 14) or two types of decylthienyl groups at 2,7-positions of the PDT-2 core. Systematic investigation revealed that the alkyl length and the type of side chains have a great effect on the physicochemical properties. For alkylated PDT-2, the solubility was gradually decreased as the chain length was increased. For instance, C8-PDT-2 exhibited the highest solubility (5.0 g/L) in chloroform. Additionally, substitution with 5-decylthienyl groups showed poor solubility in both chloroform and toluene, whereas PDT-2 with 4-decylthienyl groups resulted in higher solubility. Furthermore, UV-vis absorption of PDT-2 derivatives substituted by decylthienyl groups showed a redshift, indicating the extension of their π-conjugation length. This work reveals that modification of the conjugated core by alkyl or decylthienyl side chains may be an efficient strategy by which to change the physicochemical properties, which might lead to the development of high-performance organic semiconductors.

    DOI: 10.3390/molecules25173842

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  • Decarboxylative Cross-Coupling of Acyl Fluorides with Potassium Perfluorobenzoates Reviewed

    Liyan Fu, Qiang Chen, Yasushi Nishihara

    Organic Letters   22 ( 16 )   6388 - 6393   2020.8

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.orglett.0c02215

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  • Syntheses of polynorbornadienes by ring-opening metathesis polymerizations of symmetric and non-symmetric 2,3-bis(alkoxycarbonyl)norbornadienes and their conversion to half-ester derivatives Reviewed

    Jianjun Shi, Yuki Hayashishita, Toshikazu Takata, Yasushi Nishihara, Satomi Niwayama

    Organic & Biomolecular Chemistry   18 ( 34 )   6634 - 6642   2020.7

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    DOI: 10.1039/d0ob01252a

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  • Palladium/copper-cocatalyzed decarbonylative alkynylation of acyl fluorides with alkynylsilanes: Synthesis of unsymmetrical diarylethynes Reviewed

    Qiang Chen, Liyan Fu, Yasushi Nishihara

    Chemical Communications   56 ( 57 )   7977 - 7980   2020.6

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  • Methoxylation of Acyl Fluorides with Tris(2,4,6-trimethoxyphenyl)phosphine via C-OMe Bond Cleavage under Metal-Free Conditions Reviewed

    Xiu Wang, Zhenhua Wang, Takumi Ishida, Yasushi Nishihara

    Journal of Organic Chemistry   85 ( 11 )   7526 - 7533   2020.4

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    DOI: 10.1021/acs.joc.0c00640

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  • Synthesis of Dinaphtho[2,3-d:2’,3’-d’]anthra[1,2-b:5,6-b’]dithiophene (DNADT) Derivatives: Effect of Alkyl Chains on Transistor Properties Invited Reviewed

    Takumi Ishida, Yuta Sawanaka, Ryota Toyama, Zhenfei Ji, Hiroki Mori, Yasushi Nishihara

    International Journal of Molecular Sciences   21 ( 7 )   2447 - 2447   2020.4

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    To investigate organic field-effect transistor (OFET) properties, a new thienoacene-type molecule, 4,14-dihexyldinaphtho[2,3-d:2’,3’-d’]anthra[1,2-b:5,6-b’]dithiophene (C6-DNADT), consisting of π-conjugated nine aromatic rings and two hexyl chains along the longitudinal molecular axis has been successfully synthesized by sequential reactions, including Negishi coupling, epoxidation, and cycloaromatization. The fabricated OFET using thin films of C6-DNADT exhibited p-channel FET properties with field-effect mobilities (µ) of up to 2.6 × 10−2 cm2 V−1 s−1, which is ca. three times lower than that of the parent DNADT molecule (8.5 × 10−2 cm2 V−1 s−1). Although this result implies that the installation of relatively short alkyl chains into the DNADT core is not suitable for transistor application, the origins for the FET performance obtained in this work is fully discussed, based on theoretical calculations and solid-state structure of C6-DNADT by grazing incidence wide-angle X-ray scattering (GIWAXS) and atomic force microscopy (AFM) analyses. The results obtained in this study disclose the effect of alkyl chains introduced onto the molecule on transistor characteristics.

    DOI: 10.3390/ijms21072447

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  • Palladium-Catalyzed Decarbonylative Alkylation of Acyl Fluorides Reviewed

    Liyan Fu, Qiang Chen, Zhenhua Wang, Yasushi Nishihara

    Organic Letters   22 ( 6 )   2350 - 2353   2020.3

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  • Nickel or Palladium-Catalyzed Decarbonylative Transformations of Carboxylic Acid Derivatives Reviewed

    Zhenhua Wang, Xiu Wang, Yasushi Nishihara

    Chemistry An Asian Journal   15 ( 8 )   1234 - 1247   2020.3

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    DOI: 10.1002/asia.202000117

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  • Copper-Catalyzed Regioselective Aminothiolation of Aromatic and Aliphatic Alkenes with N-Fluorobenzenesulfonimide and Thiols through Three-Component Radical Coupling Reviewed

    Masayuki Iwasaki, Kosei Nonaka, Song Zou, Yuta Sawanaka, Takaaki Shinozaki, Tomoya Fujii, Kiyohiko Nakajima, Yasushi Nishihara

    The Journal of Organic Chemistry   84 ( 23 )   15373 - 15379   2019.12

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    DOI: 10.1021/acs.joc.9b02392

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  • Nickel-Catalyzed Decarbonylative Cyanation of Acyl Chlorides Reviewed

    Zhenhua Wang, Xiu Wang, Yasuyuki Ura, Yasushi Nishihara

    Organic Letters   21 ( 17 )   6779 - 6784   2019.9

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    DOI: 10.1021/acs.orglett.9b02398

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  • Transistor Properties of Semiconducting Polymers Based on Vinylene-bridged Difluorobenzo[c][1,2,5]thiadiazole (FBTzE) Reviewed

    Yuya Asanuma, Hiroki Mori, Yasushi Nishihara

    Chemistry Letters   48 ( 9 )   1029 - 1031   2019.9

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    DOI: 10.1246/cl.190304

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  • Nickel/copper-cocatalyzed decarbonylative silylation of acyl fluorides Reviewed

    Wang Xiu, Wang Zhenhua, Nishihara Yasushi

    Chemical Communications   55 ( 71 )   10507 - 10510   2019.8

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    DOI: 10.1039/c9cc05325e

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  • PPh3-Assisted Esterification of Acyl Fluorides with Ethers via C(sp3)–O Bond Cleavage Accelerated by TBAT Invited Reviewed

    Zhenhua Wang, Xiu Wang, Yasushi Nishihara

    Catalysts   9 ( 7 )   574 - 574   2019.6

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    DOI: 10.3390/catal9070574

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  • Bis[1]benzothieno[5,4-d:5¤,4¤-d¤]benzo[1,2-b:4,5-b¤]dithiophene Derivatives: Synthesis and effect of sulfur positions on their transistor properties Reviewed

    Shuhei Nishinaga, Masato Mitani, Hiroki Mori, Toshihiro Okamoto, Jun Takeya, Yasushi Nishihara

    Bulletin of the Chemical Society of Japan   92 ( 6 )   1107 - 1116   2019.5

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    DOI: 10.1246/bcsj.20180358

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  • Synthesis of 2-Substituted Propenes by Bidentate Phosphine-Assisted Methylenation of Acyl Fluorides and Acyl Chlorides with AlMe3 Reviewed

    Xiu Wang, Zhenhua Wang, Yuya Asanuma, Yasushi Nishihara

    Organic Letters   21 ( 10 )   3640 - 3643   2019.5

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    DOI: 10.1021/acs.orglett.9b01059

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  • Nickel-Catalyzed Decarbonylative Stannylation of Acyl Fluorides under Ligand-Free Conditions Invited Reviewed

    Xiu Wang, Zhenhua Wang, Li Liu, Yuya Asanuma, Yasushi Nishihara

    Molecules   24 ( 9 )   1671 - 1671   2019.4

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    DOI: 10.3390/molecules24091671

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  • Copper-catalyzed Regioselective Chloroamination of Alkenes with Chlorotrimethylsilane and N-Fluorobenzenesulfonimide under Microwave-assisted Conditions Reviewed

    Masayuki Iwasaki, Jie Xu, Yukari Tani, Liyan Fu, Yuichi Ikemoto, Yasuyuki Ura, Yasushi Nishihara

    Chemistry Letters   48 ( 3 )   281 - 284   2019.3

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    DOI: 10.1246/cl.180937

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  • Synthesis and Physicochemical Properties of Dibenzo[2,3-d:2′,3′-d′]anthra[1,2-b:5,6-b′]dithiophene (DBADT) and Its Derivatives: Effect of Substituents on Their Molecular Orientation and Transistor Properties Reviewed

    Keita Hyodo, Shuhei Nishinaga, Yuta Sawanaka, Takumi Ishida, Hiroki Mori, Yasushi Nishihara

    The Journal of Organic Chemistry   84 ( 2 )   698 - 709   2019.1

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    DOI: 10.1021/acs.joc.8b02557

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  • Vinylene-bridged difluorobenzo[c][1,2,5]-thiadiazole (FBTzE): a new electron-deficient building block for high-performance semiconducting polymers in organic electronics Reviewed

    Yuya Asanuma, Hiroki Mori, Ryosuke Takahashi, Yasushi Nishihara

    Journal of Materials Chemistry C   7 ( 4 )   905 - 916   2019.1

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    DOI: 10.1039/c8tc05764h

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  • Nickel-catalysed decarbonylative borylation of aroyl fluorides Reviewed

    Zhenhua Wang, Xiu Wang, Yasushi Nishihara

    Chemical Communications   54 ( 99 )   13969 - 13972   2018.11

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    DOI: 10.1039/c8cc08504h

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  • Development of a phenanthrodithiophene‐difluorobenzoxadiazole copolymer exhibiting high open‐circuit voltage in organic solar cells Reviewed

    Hiroki Mori, Ryosuke Takahashi, Yasushi Nishihara

    Journal of Polymer Science Part A: Polymer Chemistry   56 ( 23 )   2646 - 2655   2018.10

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    DOI: 10.1002/pola.29248

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  • Nickel-Catalyzed Decarbonylative Alkylation of Aroyl Fluorides Assisted by Lewis-Acidic Organoboranes Reviewed

    Yasuhiro Okuda, Jie Xu, Takumi Ishida, Chen-an Wang, Yasushi Nishihara

    ACS OMEGA   3 ( 10 )   13129 - 13140   2018.10

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    DOI: 10.1021/acsomega.8b02155

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  • Synthesis and Transistor Characteristics of Dinaphtho[2,3-d:2 ',3 '-d ']anthra[1,2-b:5,6-b ']dithiophene (DNADT) Reviewed

    Nishinaga Shuhei, Sawanaka Yuta, Toyama Ryota, Ishida Takumi, Mori Hiroki, Nishihara Yasushi

    Chemistry Letters   47 ( 11 )   1409 - 1411   2018.9

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    DOI: 10.1246/cl.180644

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  • Efficient Synthesis and Properties of [1]Benzothieno[3,2-b ]thieno[2,3-d ]furans and [1]Benzothieno[3,2-b ]thieno[2,3-d ]thiophenes Reviewed

    Yuji Kurimoto, Koichi Mitsudo, Hiroki Mandai, Atsushi Wakamiya, Yasujiro Murata, Hiroki Mori, Yasushi Nishihara, Seiji Suga

    Asian Journal of Organic Chemistry   7 ( 8 )   1635 - 1641   2018.8

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    DOI: 10.1002/ajoc.201800270

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  • Alkoxy-Substituted Anthra[1,2-c:5,6-c’]bis([1,2,5]-thiadiazole) (ATz): a New Electron-Acceptor Unit in the Semiconducting Polymers for Organic Electronics Reviewed

    Hiroki Mori, Shuhei Nishinaga, Ryosuke Takahashi, Yasushi Nishihara

    Macromolecules   51   5473 - 5484   2018.6

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  • Regioselective Synthesis of γ‑Lactones by Iron-Catalyzed Radical Annulation of Alkenes with α‑Halocarboxylic Acids and Their Derivatives Reviewed

    Masayuki Iwasaki, Natsumi Miki, Yuichi Ikemoto, Yasuyuki Ura, Yasushi Nishihara

    Org. Lett.   20   3848 - 3852   2018.6

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  • Low-bandgap semiconducting polymers based on sulfur-containing phenacene-type molecules for transistor and solar cell applications Reviewed

    Hiroki Mori, Yasushi Nishihara

    Polymer Journal   50   1 - 11   2018.5

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    DOI: 10.1038/s41428-018-0072-4

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  • Efficient Synthesis and Properties of [1]Benzothieno[3,2-b]thieno[2,3-d]furans and [1]Benzothieno[3,2-b]thieno[2,3-d]thiophenes Reviewed

    Yuji Kurimoto, Koichi Mitsudo, Hiroki Mandai, Atsushi Wakamiya, Yasujiro Murata, Hiroki Mori, Yasushi Nishihara, Seiji Suga

    Asian J. Org. Chem.   7   1635 - 1641   2018.5

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  • Effect of Substitution Positions of Alkyl Side Chains in Phenanthrodithiophene–Isoindigo Copolymers: The Enhancement of Crystallinity and Control of Molecular Orders Reviewed

    Hiroki Mori, Shuto Hara, Ryota Toyama, Yuya Asanuma, Ryosuke Takahashi, Shuhei Nishinaga, Yasushi Nishihara

    J. Poly. Sci. Part A: Pol. Chem.   56   1757 - 1767   2018.5

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  • Phenanthrodithiophene (PDT)-Difluorobenzothiadiazole (DFBT) Copolymers: Effect on Molecular Orientation and Solar Cell Performance of Alkyl Substitution onto a PDT Core Reviewed

    Hiroki Mori, Ryosuke Takahashi, Keita Hyodo, Shuhei Nishinaga, Yuta Sawanaka, Yasushi Nishihara

    Macromolecules   51 ( 4 )   1357 - 1369   2018.2

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    DOI: 10.1021/acs.macromol.7b02734

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  • Synthesis of a 1,2-Dithienylethene-Containing Donor-Acceptor Polymer via Palladium-Catalyzed Direct Arylation Polymerization (DArP) Invited Reviewed

    Masayuki Wakioka, Natsumi Yamashita, Hiroki Mori, Yasushi Nishihara, Fumiyuki Ozawa

    Molecules   23 ( 4 )   981 - 990   2018

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    DOI: 10.3390/molecules23040981

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  • Synthesis and Transistor Application of Bis[1]benzothieno[6,7?d:6',7'?d']benzo[1,2-b:4,5-b']dithiophenes Reviewed

    Shuhei Nishinaga, Hiroki Mori, Yasushi Nishihara

    The Journal of Organic Chemistry   83   5506 - 5515   2018

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  • Direct thiolation and seienation of aryl C-H bonds catalyzed by palladium or nickel Reviewed

    Masayuki Iwasaki, Yasushi Nishihara

    Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry   76 ( 1 )   11 - 20   2018

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    DOI: 10.5059/yukigoseikyokaishi.76.11

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  • Phenanthrene Synthesis by Palladium-Catalyzed Benzannulation with o-Bromobenzyl Alcohols through Multiple Carbon-Carbon Bond Formations Reviewed

    Masayuki Iwasaki, Yasuhiro Araki, Yasushi Nishihara

    JOURNAL OF ORGANIC CHEMISTRY   82 ( 12 )   6242 - 6258   2017.6

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    DOI: 10.1021/acs.joc.7b00848

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  • Solar Cell Performance of Phenanthrodithiophene-Isoindigo Copolymers Depends on Their Thin-Film Structure and Molecular Weight Reviewed

    Hiroki Mori, Shuto Hara, Shuhei Nishinaga, Yasushi Nishihara

    MACROMOLECULES   50 ( 12 )   4639 - 4648   2017.6

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    DOI: 10.1021/acs.macromol.7b00778

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  • Synthesis of Benzoisoselenazolone Derivatives by Nickel-Catalyzed Dehydrogenative Direct Selenation of C(sp(2))-H Bonds with Elemental Selenium in Air Reviewed

    Masayuki Iwasaki, Natsumi Miki, Yuta Tsuchiya, Kiyohiko Nakajima, Yasushi Nishihara

    ORGANIC LETTERS   19 ( 5 )   1092 - 1095   2017.3

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    DOI: 10.1021/acs.orglett.7b00116

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  • Synthesis and Physicochemical Properties of Piceno[4,3-b:9,10-b′]dithiophene Derivatives and Their Application in Organic Field-Effect Transistors Reviewed

    Keita Hyodo, Ryota Toyama, Hiroki Mori, Yasushi Nishihara

    ACS Omega   2 ( 1 )   308 - 315   2017.1

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    DOI: 10.1021/acsomega.7b00015

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  • Bis[1]benzothieno[2,3-d:2 ',3 '-d ']anthra[1,2-b:5,6-b ']dithiophene: synthesis, characterization, and application to organic field-effect transistors Reviewed

    Keita Hyodo, Hideki Hagiwara, Ryota Toyama, Hiroki Mori, Shin-ichi Soga, Yasushi Nishihara

    RSC ADVANCES   7 ( 10 )   6089 - 6092   2017

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    DOI: 10.1039/c6ra27455b

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  • Transistor Properties of 2,7-Dialkyl-Substituted Phenanthro[2,1-b:7,8-b '] dithiophene

    Yoshihiro Kubozono, Keita Hyodo, Shino Hamao, Yuma Shimo, Hiroki Mori, Yasushi Nishihara

    Scientific Reports   6   38535   2016.12

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    DOI: 10.1038/srep38535

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  • Synthesis of Multisubstituted Olefins through Regio- and Stereoselective Addition of Interelement Compounds Having B-Si, B-B, and Cl-S Bonds to Alkynes, and Subsequent Cross-Couplings

    Masayuki Iwasaki, Yasushi Nishihara

    CHEMICAL RECORD   16 ( 4 )   2031 - 2045   2016.8

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    DOI: 10.1002/tcr.201600017

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  • Highly Selective Synthesis of Multi-substituted Olefins Mediated by Zirconocene Complexes

    Keita Hyodo, Yasushi Nishihara

    JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN   74 ( 8 )   792 - 802   2016.8

  • Palladium-Catalyzed Regio- and Stereoselective Carbothiolation of Terminal Alkynes with Azolyl Sulfides

    Masayuki Iwasaki, Nikola Topolovcan, Hao Hu, Yugo Nishimura, Glwadys Gagnot, Rungsaeng Na Nakorn, Ramida Yuvacharaskul, Kiyohiko Nakajima, Yasushi Nishihara

    ORGANIC LETTERS   18 ( 7 )   1642 - 1645   2016.4

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    DOI: 10.1021/acs.orglett.6b00503

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  • Highly crystalline, low band-gap semiconducting polymers based on phenanthrodithiophene-benzothiadiazole for solar cells and transistors

    Hiroki Mori, Hikaru Nonobe, Yasushi Nishihara

    POLYMER CHEMISTRY   7 ( 8 )   1549 - 1558   2016

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    DOI: 10.1039/c5py01878a

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  • Palladium-catalysed direct thiolation and selenation of aryl C-H bonds assisted by directing groups Reviewed

    Masayuki Iwasaki, Yasushi Nishihara

    DALTON TRANSACTIONS   45 ( 39 )   15278 - 15284   2016

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    DOI: 10.1039/c6dt02167k

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  • Molecular mechanism of palladium-catalyzed cyanoesterification of methyl cyanoformate onto norbornene Reviewed

    Takuya Ishitsuka, Yasuhiro Okuda, Robert K. Szilagyi, Seiji Mori, Yasushi Nishihara

    Dalton Trans.   45 ( 18 )   7786 - 7793   2016

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    DOI: 10.1039/c6dt00341a

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  • Synthesis of Multisubstituted Triphenylenes and Phenanthrenes by Cascade Reaction of o-lodobiphenyls or (Z)-beta-Halostyrenes with o-Bromobenzyl Alcohols through Two Sequential C-C Bond Formations Catalyzed by a Palladium Complex

    Masayuki Iwasaki, Yasuhiro Araki, Shohei Iino, Yasushi Nishihara

    JOURNAL OF ORGANIC CHEMISTRY   80 ( 18 )   9247 - 9263   2015.9

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    DOI: 10.1021/acs.joc.5b01693

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  • Impact of Alkyl Side Chains on Thin-film Transistor Performances in Phenanthrodithiophene-Isoindigo Copolymers

    Shuhei Nishinaga, Hiroki Mori, Yasushi Nishihara

    CHEMISTRY LETTERS   44 ( 7 )   998 - 1000   2015.7

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    DOI: 10.1246/cl.150357

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  • Phenanthrodithiophene-Isoindigo Copolymers: Effect of Side Chains on Their Molecular Order and Solar Cell Performance

    Shuhei Nishinaga, Hiroki Mori, Yasushi Nishihara

    MACROMOLECULES   48 ( 9 )   2875 - 2885   2015.5

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    DOI: 10.1021/acs.macromol.5b00622

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  • Erratum: Transistor application of new picene-type molecules, 2,9-dialkylated phenanthro[1,2-b:8,7-b′]dithiophenes (Journal of Materials Chemistry C (2015) 3 DOI: 10.1039/c4tc02413c) Reviewed

    Yoshihiro Kubozono, Keita Hyodo, Hiroki Mori, Shino Hamao, Hidenori Goto, Yasushi Nishihara

    Journal of Materials Chemistry C   3 ( 12 )   2960   2015.3

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    DOI: 10.1039/c5tc90044a

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  • Synthesis, Characterization, and Solar Cell and Transistor Applications of Phenanthro[1,2-b:8,7-b ']dithiophene-Diketopyrrolopyrrole Semiconducting Polymers

    Hiroki Mori, Masato Suetsugu, Shuhei Nishinaga, Ning-hui Chang, Hikaru Nonobe, Yasuhiro Okuda, Yasushi Nishihara

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   53 ( 5 )   709 - 718   2015.3

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    DOI: 10.1002/pola.27500

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  • A divergent synthesis of 3,10-dialkylpicenes

    Xi-Chao Chen, Shuhei Nishinaga, Yasuhiro Okuda, Jia-Ji Zhao, Jie Xu, Hiroki Mori, Yasushi Nishihara

    Organic Chemistry Frontiers   2 ( 5 )   536 - 541   2015

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    DOI: 10.1039/c5qo00039d

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  • Transistor application of new picene-type molecules, 2,9-dialkylated phenanthro[1,2-b:8,7-b ']dithiophenes

    Yoshihiro Kubozono, Keita Hyodo, Hiroki Mori, Shino Hamao, Hidenori Goto, Yasushi Nishihara

    JOURNAL OF MATERIALS CHEMISTRY C   3 ( 10 )   2413 - 2421   2015

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    DOI: 10.1039/c4tc02413c

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  • Recent progresses in organic field effect transistors based on π-conjugated organic molecules

    Hiroki Mori, Yasushi Nishihara

    Kobunshi   63 ( 12 )   866 - 870   2014.12

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  • Palladium-Catalyzed pen-Selective Chalcogenation of Naphthylamines with Diaryl Disulfides and Diselenides via C-H Bond Cleavage

    Masayuki Iwasaki, Wataru Kaneshika, Yuta Tsuchiya, Kiyohiko Nakajima, Yasushi Nishihara

    JOURNAL OF ORGANIC CHEMISTRY   79 ( 23 )   11330 - 11338   2014.12

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    DOI: 10.1021/jo502274t

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  • Iron-Induced Regio- and Stereoselective Addition of Sulfenyl Chlorides to Alkynes by a Radical Pathway Reviewed

    Masayuki Iwasaki, Tomoya Fujii, Kiyohiko Nakajima, Yasushi Nishihara

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   53 ( 50 )   13880 - 13884   2014.12

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    DOI: 10.1002/anie.201408121

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  • Chelate-Assisted Direct Selenation of Aryl C-H Bonds with Diselenides Catalyzed by Palladium Reviewed

    Masayuki Iwasaki, Yuta Tsuchiya, Kiyohiko Nakajima, Yasushi Nishihara

    ORGANIC LETTERS   16 ( 18 )   4920 - 4923   2014.9

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  • Transistor Application of Phenacene Molecules and Their Characteristics

    Yoshihiro Kubozono, Xuexia He, Shino Hamao, Kazuya Teranishi, Hidenori Goto, Ritsuko Eguchi, Takashi Kambe, Shin Gohda, Yasushi Nishihara

    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY   2014 ( 24 )   3806 - 3819   2014.8

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  • New Entry to the Synthesis of alpha-Iminonitriles by Lewis Acid Mediated Isomerization of Cyano-Substituted Iminoisobenzofurans Prepared by Palladium-Catalyzed Three-Component Coupling of Arynes, Isocyanides, and Cyanoformates

    Jing Li, Shintaro Noyori, Kiyohiko Nakajima, Yasushi Nishihara

    ORGANOMETALLICS   33 ( 13 )   3500 - 3507   2014.7

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    DOI: 10.1021/om500408h

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  • Synthesis of 2,9-dialkylated phenanthro[1,2-b:8,7-b ']dithiophenes via cross-coupling reactions and sequential Lewis acid-catalyzed regioselective cycloaromatization of epoxide Reviewed

    Keita Hyodo, Hikaru Nonobe, Shuhei Nishinaga, Yasushi Nishihara

    TETRAHEDRON LETTERS   55 ( 29 )   4002 - 4005   2014.7

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    DOI: 10.1016/j.tetlet.2014.05.035

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  • Synthesis of Methoxy-Substituted Picenes: Substitution Position Effect on Their Electronic and Single-Crystal Structures

    Hiroki Mori, Xi-chao Chen, Ning-hui Chang, Shino Hamao, Yoshihiro Kubozono, Kiyohiko Nakajima, Yasushi Nishihara

    JOURNAL OF ORGANIC CHEMISTRY   79 ( 11 )   4973 - 4983   2014.6

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    DOI: 10.1021/jo500543h

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  • Palladium- Catalyzed Direct Thiolation of Aryl C similar to H Bonds with Disulfides Reviewed

    Masayuki Iwasaki, Miki Iyanaga, Yuta Tsuchiya, Yugo Nishimura, Wenjuan Li, Zhiping Li, Yasushi Nishihara

    CHEMISTRY-A EUROPEAN JOURNAL   20 ( 9 )   2459 - 2462   2014.2

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    DOI: 10.1002/chem.201304717

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  • Palladium-Catalyzed Regio- and Stereoselective Chlorothiolation of Terminal Alkynes with Sulfenyl Chlorides Reviewed

    Masayuki Iwasaki, Tomoya Fujii, Arisa Yamamoto, Kiyohiko Nakajima, Yasushi Nishihara

    CHEMISTRY-AN ASIAN JOURNAL   9 ( 1 )   58 - 62   2014.1

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    DOI: 10.1002/asia.201301295

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  • Diborylation of Alkynyl MIDA Boronates and Sequential Chemoselective Suzuki-Miyaura Couplings: A Formal Carboborylation of Alkynes Reviewed

    Keita Hyodo, Masato Suetsugu, Yasushi Nishihara

    ORGANIC LETTERS   16 ( 2 )   440 - 443   2014.1

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    DOI: 10.1021/ol403326z

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  • Selective Synthesis of Multisubstituted Olefins Utilizing gem- and vic-Diborylated Vinylsilanes Prepared by Silylborylation of an Alkynylboronate and Diborylation of Alkynylsilanes Reviewed

    Jiao Jiao, Keita Hyodo, Hao Hu, Kiyohiko Nakajima, Yasushi Nishihara

    JOURNAL OF ORGANIC CHEMISTRY   79 ( 1 )   285 - 295   2014.1

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    DOI: 10.1021/jo4024057

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  • The origin of exo-selectivity in methyl cyanoformate addition onto the C=C bond of norbornene in Pd-catalyzed cyanoesterification” Reviewed

    Yasuhiro Okuda, Robert Szilagyi, Seiji Mori, Yasushi Nishihara

    Dalton Trans.   43 ( 25 )   9537 - 9548   2014

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    DOI: 10.1039/c4dt00839a

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  • Skeletal rearrangement of cyano-substituted iminoisobenzofurans into alkyl 2-cyanobenzoates catalyzed by B(C6F5)3 Reviewed

    Jing Li, Yasuhiro Okuda, Jiaji Zhao, Seiji Mori, Yasushi Nishihara

    Org. Lett.   16 ( 19 )   5220 - 5223   2014

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    DOI: 10.1021/ol5026519

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  • Phenanthro[1,2-b:8,7-b']dithiophene: A new picene-type molecule for rransistor applications Reviewed

    Yasushi Nishihara, Megumi Kinoshita, Keita Hyodo, Yasuhiro Okuda, Ritsuko Eguchi, Hidenori Goto, Shino Hamao, Yasuhiro Takabayashi, Yoshihiro Kubozono

    RSC Advances   3 ( 42 )   19341 - 19347   2014

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  • Synthesis, structure, and isomerization of alkoxycarbonyl(chloro)(cyano)rhodium(III) complexes, mer- RhCl(CO2R)(CN)(PMe3)3 (R = Me, Et, nPr, iPr, nBu, and Bn) through C–C bond cleavage of cyanoformates Reviewed

    Yasuhiro Okuda, Takeru Okamoto, Arisa Yamamoto, Jing Li, Kiyohiko Nakajima, Yasushi Nishihara

    Chem. Lett.   43 ( 4 )   417 - 419   2014

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    DOI: 10.1246/cl.131072

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  • Experimental and Theoretical Studies on the Platinum-Mediated Selective C(sp)-Si Bond Cleavage of Alkynylsilanes Reviewed

    Yasuhiro Okuda, Yuya Ishiguro, Seiji Mori, Kiyohiko Nakajima, Yasushi Nishihara

    Organometallics   33 ( 7 )   1878 - 1889   2014

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    DOI: 10.1021/om5002588

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  • Palladium-Catalyzed Annulation of o-lodobiphenyls with o-Bromobenzyl Alcohols: Synthesis of Functionalized Triphenylenes via C-C and C-H Bond Cleavages Reviewed

    Masayuki Iwasaki, Shohel Lino, Yasushi Nishihara

    ORGANIC LETTERS   15 ( 20 )   5326 - 5329   2013.10

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    DOI: 10.1021/oI4025869

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  • Synthesis of Multisubstituted Olefins through Regio- and Stereoselective Silylborylation of an Alkynylboronate/Chemoselective Cross-Coupling Sequences Reviewed

    Jiao Jiao, Kiyohiko Nakajima, Yasushi Nishihara

    ORGANIC LETTERS   15 ( 13 )   3294 - 3297   2013.7

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    DOI: 10.1021/ol401333j

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  • Synthesis of cyclic 1-alkenylboronates via Zr-mediated double functionalization of alkynylboronates and sequential Ru-catalyzed ring-closing olefin metathesis Reviewed

    Yasushi Nishihara, Masato Suetsugu, Daisuke Saito, Megumi Kinoshita, Masayuki Iwasaki

    Organic Letters   15 ( 10 )   2418 - 2421   2013.5

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    DOI: 10.1021/ol400896u

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  • Palladium-catalyzed and copper-mediated cross-coupling reaction of aryl- or alkenylboronic acids with acid chlorides under neutral conditions: efficient synthetic methods for diaryl ketones and chalcones at room temperature Reviewed

    Daisuke Ogawa, Keita Hyodo, Masato Suetsugu, Jing Li, Yoshiaki Inoue, Mamoru Fujisawa, Masayuki Iwasaki, Kentaro Takagi, Yasushi Nishihara

    TETRAHEDRON   69 ( 12 )   2565 - 2571   2013.3

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    DOI: 10.1016/j.tet.2013.01.058

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  • Palladium-free synthesis of unsymmetrical diarylethynes by cross-coupling reaction of alkynylboronates with aryl iodides catalyzed by CuCl Reviewed

    Daisuke Ogawa, Jing Li, Masato Suetsugu, Jiao Jiao, Masayuki Iwasaki, Yasushi Nishihara

    TETRAHEDRON LETTERS   54 ( 6 )   518 - 521   2013.2

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    DOI: 10.1016/j.tetlet.2012.11.069

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  • Synthesis of Substituted Picenes through Pd-Catalyzed Cross-Coupling Reaction/Annulation Sequences and Their Physicochemical Properties Reviewed

    Ning-hui Chang, Xi-chao Chen, Hikaru Nonobe, Yasuhiro Okuda, Hiroki Mori, Kiyohiko Nakajima, Yasushi Nishihara

    Org. Lett.   15 ( 14 )   3558 - 3561   2013

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    DOI: 10.1021/ol401375n

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  • Synthesis of substituted [6]phenacenes through Suzuki–Miyaura coupling of polyhalobenzene with alkenylboronates and sequential intramolecular cyclization via C–H bond activation Reviewed

    Ning-hui Chang, Hiroki Mori, Xi-chao Chen, Yasuhiro Okuda, Takeru Okamoto, Yasushi Nishihara

    Chem. Lett.   42 ( 10 )   1257 - 1259   2013

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    DOI: 10.1246/cl.130584

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  • A NOVEL THREE-COMPONENT COUPLING REACTION OF ARYNES, ISOCYANIDES, AND CYANOFORMATES: A STRAIGHTFORWARD ACCESS TO CYANO-SUBSTITUTED IMINOISOBENZOFURANS Reviewed

    Jing Li, Shintaro Noyori, Masayuki Iwasaki, Kiyohiko Nakajima, Yasushi Nishihara

    HETEROCYCLES   86 ( 2 )   933 - 940   2012.12

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    DOI: 10.3987/COM-12-S(N)77

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  • Synthesis of Unsymmetrical Diarylethynes by Pd(0)/Cu(I)-cocatalyzed Sila-Sonogashira-Hagihara Coupling Reactions of Alkynylsilanes with Aryl Tosylates or Mesylates Reviewed

    Yasushi Nishihara, Daisuke Ogawa, Shintaro Noyori, Masayuki Iwasaki

    CHEMISTRY LETTERS   41 ( 11 )   1503 - 1505   2012.11

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  • Synthesis of unsymmetrically disubstituted ethynes by the palladium/copper(I)-cocatalyzed sila-Sonogashira-Hagihara coupling reactions of alkynylsilanes with aryl iodides, bromides, and chlorides through a direct activation of a carbon-silicon bond Reviewed

    Yasushi Nishihara, Eiji Inoue, Shintaro Noyori, Daisuke Ogawa, Yoshiaki Okada, Masayuki Iwasaki, Kentaro Takagi

    TETRAHEDRON   68 ( 24 )   4869 - 4881   2012.6

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  • Iron-Catalyzed Oxidation of Tertiary Amines: Synthesis of beta-1,3-Dicarbonyl Aldehydes by Three-Component C-C Couplings Reviewed

    Weiping Liu, Jinhua Liu, Daisuke Ogawa, Yasushi Nishihara, Xingwei Guo, Zhiping Li

    ORGANIC LETTERS   13 ( 23 )   6272 - 6275   2011.12

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  • Copper-catalyzed Sila-Sonogashira-Hagihara Cross-coupling Reactions of Alkynylsilanes with Aryl Iodides under Palladium-free Conditions

    Yasushi Nishihara, Shintaro Noyori, Takeru Okamoto, Masato Suetsugu, Masayuki Iwasaki

    CHEMISTRY LETTERS   40 ( 9 )   972 - 974   2011.9

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    DOI: 10.1246/cl.2011.972

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  • Rh-Catalyzed Carbonylation of Arylzinc Compounds Yielding Symmetrical Diaryl Ketones by the Assistance of Oxidizing Agents

    Kana Kobayashi, Yugo Nishimura, Fuxing Gao, Kazuma Gotoh, Yasushi Nishihara, Kentaro Takagi

    JOURNAL OF ORGANIC CHEMISTRY   76 ( 6 )   1949 - 1952   2011.3

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    DOI: 10.1021/jo1025173

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  • Improvement in sulfur desorption of NOX storage and reduction catalysts using a Ba-Ti composite oxide

    Toshiyuki Tanaka, Ichirou Tajima, Yuichi Kato, Yasushi Nishihara, Hirofumi Shinjoh

    APPLIED CATALYSIS B-ENVIRONMENTAL   102 ( 3-4 )   620 - 626   2011.2

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    DOI: 10.1016/j.apcatb.2011.01.002

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  • Highly Regio- and Stereoselective Synthesis of Multialkylated Olefins through Carbozirconation of Alkynylboronates and Sequential Negishi and Suzuki-Miyaura Coupling Reactions

    Yasushi Nishihara, Yoshiaki Okada, Jiao Jiao, Masato Suetsugu, Ming-Tzu Lan, Megumi Kinoshita, Masayuki Iwasaki, Kentaro Takagi

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   50 ( 37 )   8660 - 8664   2011

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    DOI: 10.1002/anie.201103601

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  • Negishi Alkyl-Aryl Cross-Coupling Catalyzed by Rh: Efficiency of Novel Tripodal 3-Diphenylphosphino-2-(diphenylphosphino)methyl-2-methylpropyl Acetate Ligand

    Syogo Ejiri, Shunsuke Odo, Hideki Takahashi, Yugo Nishimura, Kazuma Gotoh, Yasushi Nishihara, Kentaro Takagi

    ORGANIC LETTERS   12 ( 8 )   1692 - 1695   2010.4

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    DOI: 10.1021/ol100210u

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  • Enantioseparation of Doubly Functionalized Polar Norbornenes by HPLC and Their Ruthenium-Catalyzed Ring-Opening Metathesis Polymerization

    Yasushi Nishihara, Yukiko Doi, Seisuke Izawa, Horng-Yi Li, Yoshiaki Inoue, Masaaki Kojima, Jwu-Ting Chen, Kentaro Takagi

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   48 ( 2 )   485 - 491   2010.1

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    DOI: 10.1002/pola.23781

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  • Palladium- and base-free synthesis of conjugated ynones by cross-coupling reactions of alkynylboronates with acid chlorides mediated by CuCl

    Yasushi Nishihara, Daisuke Saito, Eiji Inoue, Yoshiaki Okada, Mikihiro Miyazaki, Yoshiaki Inoue, Kentaro Takagi

    TETRAHEDRON LETTERS   51 ( 2 )   306 - 308   2010.1

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    DOI: 10.1016/j.tetlet.2009.11.001

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  • Development of New Methodology for Bond Activation by Transition Metal Complexes and Their Application toward Functional Molecule Synthesis

    Yasushi Nishihara

    JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN   67 ( 9 )   889 - 897   2009.9

  • Regio- and Stereoselective Synthesis of Multisubstituted Vinylsilanes via Zirconacycles

    Yasushi Nishihara, Daisuke Saito, Kenki Tanemura, Shintaro Noyori, Kentaro Takagi

    ORGANIC LETTERS   11 ( 16 )   3546 - 3549   2009.8

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    DOI: 10.1021/ol901236s

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  • Palladium/copper-catalyzed sila-Sonogashira reactions of aryl iodides with alkynylsilanes via a direct C-Si bond activation

    Yasushi Nishihara, Eiji Inoue, Daisuke Ogawa, Yoshiaki Okada, Shintaro Noyori, Kentaro Takagi

    TETRAHEDRON LETTERS   50 ( 32 )   4643 - 4646   2009.8

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    DOI: 10.1016/j.tetlet.2009.05.112

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  • Comparative reactivity of triorganosilanes, HSi(OEt)(3) and HSiEt3, with IrCl(CO)(PPh3)(2). Formation of IrCl(H)(2)(CO)(PPh3)(2) or Ir(H)(2)(SiEt3)(CO)(PPh3)(2) depending on the substituents at Si

    Yasushi Nishihara, Miwa Takemura, Kohtaro Osakada

    INORGANICA CHIMICA ACTA   362 ( 8 )   2951 - 2956   2009.6

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  • Rh-Catalyzed Negishi Alkyl-Aryl Cross-Coupling Leading to alpha- or beta-Phosphoryl-Substituted Alkylarenes

    Hideki Takahashi, Shinya Inagaki, Naoko Yoshii, Fuxing Gao, Yasushi Nishihara, Kentaro Takagi

    JOURNAL OF ORGANIC CHEMISTRY   74 ( 7 )   2794 - 2797   2009.4

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    DOI: 10.1021/jo900142b

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  • Photocatalytic Activities of Graphitic Carbon Nitride Powder for Water Reduction and Oxidation under Visible Light

    Kazuhiko Maeda, Xinchen Wang, Yasushi Nishihara, Daling Lu, Markus Antonietti, Kazunari Domen

    JOURNAL OF PHYSICAL CHEMISTRY C   113 ( 12 )   4940 - 4947   2009.3

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    DOI: 10.1021/jp809119m

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  • Sila-Sonogashira Cross-Coupling Reactions of Activated Aryl Chlorides with Alkynylsilanes

    Yasushi Nishihara, Eiji Inoue, Yoshiaki Okada, Kentaro Takagi

    SYNLETT   ( 19 )   3041 - 3045   2008.12

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    DOI: 10.1055/s-0028-1087345

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  • Synthesis and Ion Conductive Characteristics of Inorganic-Organic Hybrid Polymers Bearing a Tetraarylpentaborate Unit

    Yasushi Nishihara, Mikihiro Miyazaki, Yasumasa Tomita, Yuuki Kadono, Kentaro Takagi

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   46 ( 23 )   7913 - 7918   2008.12

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    DOI: 10.1002/pola.23070

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  • Synthesis, characterization, and thermal properties of ring-opening metathesis polynorbornenes and their hydrogenated derivatives bearing various ester and cyano groups

    Yasushi Nishihara, Seisuke Izawa, Yoshiaki Inoue, Yuushou Nakayama, Takeshi Shiono, Kentaro Takagi

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   46 ( 10 )   3314 - 3325   2008.5

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  • Pd-P(t-BU)(3)-catalyzed consecutive cross-coupling of p-phenylenedizinc compound with two different electrophiles leading to unsymmetrically 1,4-disubstituted benzenes

    Takahiro Kawamoto, Shogo Ejiri, Kana Kobayashi, Shunsuke Odo, Yasushi Nishihara, Kentaro Takagi

    JOURNAL OF ORGANIC CHEMISTRY   73 ( 4 )   1601 - 1604   2008.2

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    DOI: 10.1021/jo702103r

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  • Zirconocene-mediated highly regio- and stereoselective synthesis of multisubstituted olefins starting from 1-alkynylboronates Reviewed

    Yasushi Nishihara, Mitsuru Miyasaka, Masanori Okamoto, Hideki Takahashi, Eiji Inoue, Kenki Tanemura, Kentaro Takagi

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   129 ( 42 )   12634 - +   2007.10

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    DOI: 10.1021/ja075234y

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  • Preparation, structures, and thermal reactivity of alkoxycarbonyl(cyano)palladium(II) complexes trans-Pd(COOR)(CN)(PPh3)(2) (R = Me, Et, Pr-n, Pr-i, Bu-n, Bu-t, and Bn) as intermediates of the palladium-catalyzed cyanoesterification of norbornene derivatives

    Yasushi Nishihara, Mitsuru Miyasaka, Yoshiaki Inoue, Tomoka Yamaguchi, Masaaki Kojima, Kentaro Takagi

    ORGANOMETALLICS   26 ( 16 )   4054 - 4060   2007.7

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  • Living ring-opening metathesis polymerization of Exo-norbornenes bearing both cyano and ester functionalities by a well-defined ruthenium catalyst

    Yasushi Nishihara, Yoshiaki Inoue, Akira T. Saito, Yuushou Nakayama, Takeshi Shiono, Kentaro Takagi

    POLYMER JOURNAL   39 ( 4 )   318 - 329   2007

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    DOI: 10.1295/polymj.PJ2006129

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  • 1,1,3,3-Tetrakis(alkylthio)-1,3-dilithio-2-silapropanes: useful reagents for the synthesis of polysilacycloalkanes via dianionic ring formation

    Masaki Shimizu, Masayuki Iwakubo, Yasushi Nishihara, Katsunari Oda, Tamejiro Hiyama

    ARKIVOC   29 - 48   2007

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  • 1,1,3,3-Tetrakis(alkylthio)-1,3-dilithio-2-silapropanes: Useful reagents for the synthesis of polysilacycloalkanes via dianionic ring formation

    Masaki Shimizu, Masayuki Iwakubo, Yasushi Nishihara, Katsunari Oda, Tamejiro Hiyama

    Arkivoc   2007 ( 10 )   29 - 48   2007

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    DOI: 10.3998/ark.5550190.0008.a05

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  • Cyanoesterification of norbornenes catalyzed by palladium: facile synthetic methodology to introduce cyano and ester functionalities via direct carbon-carbon bond cleavage of cyanoformates

    Yasushi Nishihara, Yoshiaki Inoue, Seisuke Izawa, Mitsuru Miyasaka, Kenki Tanemura, Kiyohiko Nakajima, Kentaro Takagi

    TETRAHEDRON   62 ( 42 )   9872 - 9882   2006.10

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  • Comparative reactivity of exo- and endo-isomers in the Ru-initiated ring-opening metathesis polymerization of doubly functionalized norbornenes with both cyano and ester groups

    Yasushi Nishihara, Yoshiaki Inoue, Yuushou Nakayama, Takeshi Shiono, Kentaro Takagi

    MACROMOLECULES   39 ( 22 )   7458 - 7460   2006.10

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    DOI: 10.1021/ma061781c

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  • Novel Rh catalysis in cross-coupling between alkyl halides and arylzinc compounds possessing ortho-COX (X = OR, NMe2, or Ph) groups

    Hideki Takahashi, Shinya Inagaki, Yasushi Nishihara, Takanori Shibata, Kentaro Takagi

    ORGANIC LETTERS   8 ( 14 )   3037 - 3040   2006.7

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    DOI: 10.1021/ol060969d

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  • Synthesis of functionalized benzylsilanes from arylzinc compounds and (iodomethyl)trimethylsilane by means of a novel Rh catalysis

    H Takahashi, KM Hossain, Y Nishihara, T Shibata, K Takagi

    JOURNAL OF ORGANIC CHEMISTRY   71 ( 2 )   671 - 675   2006.1

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    DOI: 10.1021/jo0520994

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  • Preparation and polymerization of doubly functionalized polar norbornene derivatives

    Yasushi Nishihara, Yoshiaki Inoue, Kentaro Takagi

    Polymer Preprints, Japan   55 ( 1 )   220   2006

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  • Synthesis of symmetrical 1,3-butadiynes by homocoupling reactions of alkynylboronates mediated by a copper salt

    Y Nishihara, M Okamoto, Y Inoue, M Miyazaki, M Miyasaka, K Takagi

    TETRAHEDRON LETTERS   46 ( 50 )   8661 - 8664   2005.12

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    DOI: 10.1016/j.tetlet.2005.10.056

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  • Ring-opening isomerization of methylenecyclopropanes catalyzed by hydridorhodium(I) complexes

    M Itazaki, Y Nishihara, H Takimoto, C Yoda, K Osakada

    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL   241 ( 1-2 )   65 - 71   2005.11

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    DOI: 10.1016/j.molcata.2005.06.045

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  • Preparation of Pd(PPh2H)(2)(PPh3)(2) and its role as a precursor of a dinuclear complex with bridging phosphide ligands

    M Itazaki, Y Nishihara, K Osakada

    TRANSITION METAL CHEMISTRY   30 ( 7 )   828 - 830   2005.10

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  • Hexanuclear Pt complexes composed of two cyclic triplatinum units connected with 1,4-diphenylene and 1,1 '-ferrocenylene spacer

    M Itazaki, O Kitami, M Tanabe, Y Nishihara, K Osakada

    JOURNAL OF ORGANOMETALLIC CHEMISTRY   690 ( 17 )   3957 - 3962   2005.9

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    DOI: 10.1016/j.jorganchem.2005.05.030

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  • Room-temperature palladium-catalyzed and copper(I)-mediated coupling reactions of acid chlorides with boronic acids under neutral conditions

    Y Nishihara, Y Inoue, M Fujisawa, K Takagi

    SYNLETT   ( 15 )   2309 - 2312   2005.9

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    DOI: 10.1055/s-2005-872661

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  • Arylplatinum complexes with arylboronate ligands. Their preparation, structure, and relevance to transmetalation

    Pantcheva, I, Y Nishihara, K Osakada

    ORGANOMETALLICS   24 ( 16 )   3815 - 3817   2005.8

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  • Selective C-C bond activation of 2-aryl-1-methylenecyclopropanes promoted by Ir(I) and Rh(I) hydrido complexes. Mechanism of ring-opening isomerization of the strained molecules

    Y Nishihara, C Yoda, M Itazaki, K Osakada

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   78 ( 8 )   1469 - 1480   2005.8

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    DOI: 10.1246/bcsj.78.1469

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  • Dinuclear Pt(II) and Pd(I) complexes with bridging PPh2 ligands from the reaction of PPh2H with zero-valent complexes of these metals

    M Tanabe, M Itazaki, O Kitami, Y Nishihara, K Osakada

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   78 ( 7 )   1288 - 1290   2005.7

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    DOI: 10.1246/bcsj.78.1288

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  • Palladium-catalyzed cyanoesterification of norbornenes with cyanoformates via the NC-Pd-COOR (R = Me and Et) intermediate

    Y Nishihara, Y Inoue, M Itazaki, K Takagi

    ORGANIC LETTERS   7 ( 13 )   2639 - 2641   2005.6

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    DOI: 10.1021/ol050749k

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  • Diarylpalladium complexes with a cis structure. Formation via transmetalation of arylboronic acids with an aryliodopalladium complex and intramolecular coupling of the aryl ligands, affording unsymmetrical biaryls

    K Osakada, H Onodera, Y Nishihara

    ORGANOMETALLICS   24 ( 2 )   190 - 192   2005.1

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    DOI: 10.1021/om049217i

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  • C-C and C-H bond activation of dialkylmethylenecyclopropane promoted by rhodium and iridium complexes. Preparation and structures of M(eta(1):eta(2)-CH2CR2CH=CH2)(CO)(PPh3)(2) and trans-M(CH=CHCMeR2)(CO)(PPh3)(2) (M = Rh, Ir, R = CH2CH2Ph)

    M Itazaki, C Yoda, Y Nishihara, K Osakada

    ORGANOMETALLICS   23 ( 23 )   5402 - 5409   2004.11

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  • Cationic Rh complexes with novel spiro tetraarylpentaborate anions prepared from arylboronic acids and aryloxorhodium complexes

    Y Nishihara, K Nara, Y Nishide, K Osakada

    DALTON TRANSACTIONS   ( 9 )   1366 - 1375   2004.5

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    DOI: 10.1039/b315902g

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  • Stereodivergent syntheses of (Z)- and (E)-alkenylsilanes via hydrosilylation of terminal alkynes catalyzed by rhodium(I) iodide complexes and application to silicon-containing polymer syntheses

    A Mori, E Takahisa, Y Yamamura, T Kato, AP Mudalige, H Kajiro, K Hirabayashi, Y Nishihara, T Hiyama

    ORGANOMETALLICS   23 ( 8 )   1755 - 1765   2004.4

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    DOI: 10.1021/om049922r

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  • Syntheses of dinuclear and trinuclear hydridoplatinum complexes with bridging phosphido Ligands [Pt2H2(mu-PR2)(2)(PEt3)(2)] (R = Bu-t, Ph) and [Pt3H2(mu-PPh2)(4)(PEt3)(2)]. Characterization of the triangular intermediate [Pt3H(mu-PPh2)(3)(PEt3)(3)] and its chemical properties

    M Itazaki, Y Nishihara, K Osakada

    ORGANOMETALLICS   23 ( 7 )   1610 - 1621   2004.3

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  • Synthesis and structural characterization of the first unsymmetrical diarylpalladium complex trans-Pd(C6F5)(2,4,6-C6F3H2)(PEt3)(2), derived from transmetallation between 2,4,6-trifluorophenylboronic acid and trans-Pd(C6F5)I(PEt3)(2)

    Y Nishihara, H Onodera, K Osakada

    CHEMICAL COMMUNICATIONS   ( 2 )   192 - 193   2004.1

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    DOI: 10.1039/b308741g

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  • New stable complexes of Au(III) with biuret: X-ray structure of cis-[Au(Biu)Br-2]PPh4 and Ab initio investigation of cis-[Au(Biu)X-2](-)

    N Mintcheva, M Mitewa, Enchev, V, Y Nishihara

    JOURNAL OF COORDINATION CHEMISTRY   56 ( 4 )   299 - 305   2003.3

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    DOI: 10.1080/0095897031000069049

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  • Platinum complex-catalyzed hydrosilylation and isomerization of methylenecyclopropane derivatives. Effect of structures of the substrate and catalyst

    M Itazaki, Y Nishihara, K Osakada

    JOURNAL OF ORGANIC CHEMISTRY   67 ( 20 )   6889 - 6895   2002.10

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    DOI: 10.1021/jo020293+

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  • Tetraarylpentaborates, [B5O6Ar4](-) (Ar = C6H4OMe-4, C6H3Me2-2,6): Their formation from the reaction of arylboronic acids with an aryloxorhodium complex, structure, and chemical properties

    Y Nishihara, K Nara, K Osakada

    INORGANIC CHEMISTRY   41 ( 16 )   4090 - 4092   2002.8

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    DOI: 10.1021/ic015630w

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  • Platinum complex-catalyzed hydrosilylation of 2,2-diaryl-1-methylenecyclopropane affording (silylmethyl)cyclopropane

    Y Nishihara, M Itazaki, K Osakada

    TETRAHEDRON LETTERS   43 ( 11 )   2059 - 2061   2002.3

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    DOI: 10.1016/S0040-4039(02)00165-X

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  • Structure and properties of halogeno(hydrido) (triorganosilyl)rhodium(III) complexes, RhX(H) ((SiRnR3-n2)-R-1)(PPh3)(2) (X = Cl, I; R-1 = OSiMe3, OEt, R-2 = Me). Influence of the alkoxy groups and halo ligand on stability and reactivity of the complexes

    Y Nishihara, M Takemura, K Osakada

    ORGANOMETALLICS   21 ( 5 )   825 - 831   2002.3

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    DOI: 10.1021/om010862o

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  • Isomerization of (Z)-alkenylsilanes to (E)-isomers with hydrosilane and RhI(PPh3)(3)

    A Mori, E Takahisa, Y Nishihara, T Hiyama

    CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE   79 ( 11 )   1522 - 1524   2001.11

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    DOI: 10.1139/cjc-79-11-1522

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  • Homo-coupling polycondensation of bis(alkynylsilane)s mediated by copper(I) chloride: A new synthesis of poly(arylenebutadiynylene)s

    Y Nishihara, T Kato, J Ando, A Mori, T Hiyama

    CHEMISTRY LETTERS   ( 10 )   950 - 951   2001.10

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    DOI: 10.1246/cl.2001.950

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  • Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes

    K Sato, Y Nishihara, SQ Huo, ZF Xi, T Takahashi

    JOURNAL OF ORGANOMETALLIC CHEMISTRY   633 ( 1-2 )   18 - 26   2001.9

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    DOI: 10.1016/S0022-328X(01)01072-5

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  • Reactions of HOSiMe2Ar with PtPPh3 complexes leading to Si-C bond activation or formation of a siloxoplatinum complex

    N Mintcheva, Y Nishihara, A Mori, K Osakada

    JOURNAL OF ORGANOMETALLIC CHEMISTRY   629 ( 1-2 )   61 - 67   2001.6

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    DOI: 10.1016/S0022-328X(01)00796-3

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  • Hydrido-Rhodium(I) and -Iridium(I) complex promoted ring-opening isomerization of unsymmetrically substituted methylenecyclopropanes into 1,3-dienes. Structures of intermediates and reaction pathways

    Y Nishihara, C Yoda, K Osakada

    ORGANOMETALLICS   20 ( 11 )   2124 - 2126   2001.5

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    DOI: 10.1021/om010081n

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  • Palladium-catalyzed cross-coupling polycondensation of bisalkynes with dihaloarenes activated by tetrabutylammonium hydroxide or silver(I) oxide

    A Mori, T Kondo, T Kato, Y Nishihara

    CHEMISTRY LETTERS   ( 4 )   286 - 287   2001.4

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    DOI: 10.1246/cl.2001.286

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  • Si-C bond activation of ArMe2SiOH promoted by a bromoplatinum(II) complex and Ag2O. Aryl group transfer from silicon to platinum

    N Mintcheva, Y Nishihara, M Tanabe, K Hirabayashi, A Mori, K Osakada

    ORGANOMETALLICS   20 ( 6 )   1243 - 1246   2001.3

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    DOI: 10.1021/om010006c

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  • Reaction of alkynylsilanes with CuCl in polar solvents leading to alkynyl group transfer from Si to Cu

    Y Nishihara, M Takemura, A Mori, K Osakada

    JOURNAL OF ORGANOMETALLIC CHEMISTRY   620 ( 1-2 )   282 - 286   2001.2

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    DOI: 10.1016/S0022-328X(00)00794-4

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  • Non-Sonogashira-type palladium-catalyzed coupling reactions of terminal alkynes assisted by silver(I) oxide or tetrabutylammonium fluoride

    A Mori, J Kawashima, T Shimada, M Suguro, K Hirabayashi, Y Nishihara

    ORGANIC LETTERS   2 ( 19 )   2935 - 2937   2000.9

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    DOI: 10.1021/ol0061586

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  • Palladium-catalyzed cross-coupling of silanols, silanediols, and silanetriols promoted by silver(I) oxide

    E Hirabayashi, A Mori, J Kawashima, M Suguro, Y Nishihara, T Hiyama

    JOURNAL OF ORGANIC CHEMISTRY   65 ( 17 )   5342 - 5349   2000.8

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    DOI: 10.1021/jo000679p

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  • Novel carbon-carbon bond formation through Mizoroki-Heck type reaction of silanols and organotin compounds

    K Hirabayashi, J Ando, J Kawashima, Y Nishihara, A Mori, T Hiyama

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   73 ( 6 )   1409 - 1417   2000.6

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    DOI: 10.1246/bcsj.73.1409

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  • A novel cross-coupling polycondensation of alkynylsilanes with aryl triflates catalyzed by CuCl/Pd(PPh3)(4)

    Y Nishihara, J Ando, T Kato, A Mori, T Hiyama

    MACROMOLECULES   33 ( 8 )   2779 - 2781   2000.4

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    DOI: 10.1021/ma9908301

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  • Home-coupling reactions of alkenyl- and arylfluorosilanes mediated by a copper(I) salt

    Y Nishihara, K Ikegashira, F Toriyama, A Mori, T Hiyama

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   73 ( 4 )   985 - 990   2000.4

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    DOI: 10.1246/bcsj.73.985

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  • Coupling reactions of alkynylsilanes mediated by a Cu(I) salt: Novel syntheses of conjugate diynes and disubstituted ethynes

    Y Nishihara, K Ikegashira, K Hirabayashi, J Ando, A Mori, T Hiyama

    JOURNAL OF ORGANIC CHEMISTRY   65 ( 6 )   1780 - 1787   2000.3

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  • Substituent effect of 3,3,3-trifluoropropyl group on organic silanols. Palladium-mediated Mizoroki-Heck type and cross-coupling reactions

    K Hirabayashi, T Kondo, F Toriyama, Y Nishihara, A Mori

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   73 ( 3 )   749 - 750   2000.3

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    DOI: 10.1246/bcsj.73.749

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  • Stereodivergent hydrosilylation of 1-alkynes catalyzed by RhI(PPh3)(3) leading to (E)- and (Z)-alkenylsilanes and the application to polymer synthesis

    A Mori, E Takahisa, H Kajiro, Y Nishihara, T Hiyama

    POLYHEDRON   19 ( 5 )   567 - 568   2000.3

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    DOI: 10.1016/S0277-5387(99)00409-X

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  • Regio- and stereocontrolled hydrosilylation polyaddition catalyzed by RhI(PPh3)(3). Syntheses of polymers containing (E)- or (Z)-alkenylsilane moieties

    A Mori, E Takahisa, H Kajiro, Y Nishihara, T Hiyama

    MACROMOLECULES   33 ( 4 )   1115 - 1116   2000.2

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    DOI: 10.1021/ma9913360

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  • Preparation and characterization of bis(cyclopentadienyl)zirconium(II) complexes with a tethered olefin-phosphine ligand

    A Yamazaki, Y Nishihara, K Nakajima, R Hara, T Takahashi

    ORGANOMETALLICS   18 ( 16 )   3105 - 3108   1999.8

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    DOI: 10.1021/om990103u

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  • Palladium-catalyzed carbon-carbon bond-forming reactions of silanols. Reviewed

    K Hirabayashi, D Kawashima, Y Nishihara, A Mori, T Hiyama

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   218   U101 - U101   1999.8

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  • Homo- and cross-coupling reactions of alkynylsilanes mediated by a copper(I) salt. Reviewed

    Y Nishihara, K Ikegashira, K Hirabayashi, A Mori, T Hiyama

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   218   U195 - U195   1999.8

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  • Synthesis and optical resolution of novel chiral silanols

    A Mori, F Toriyama, H Kajiro, K Hirabayashi, Y Nishihara, T Hiyama

    CHEMISTRY LETTERS   ( 7 )   549 - 550   1999.7

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    DOI: 10.1246/cl.1999.549

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  • A new transformation of silanols. Palladium-catalyzed cross-coupling with organic halides in the presence of silver(I) oxide

    K Hirabayashi, J Kawashima, Y Nishihara, A Mori, T Hiyama

    ORGANIC LETTERS   1 ( 2 )   299 - 301   1999.7

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    DOI: 10.1021/ol990614c

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  • A unique chelating effect of Sc(OTf)(3) to organofluorine compounds

    H Kajiro, A Mori, Y Nishihara, T Hiyama

    CHEMISTRY LETTERS   ( 6 )   459 - 460   1999.6

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    DOI: 10.1246/cl.1999.459

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  • Conjugate reduction of alpha,beta-unsaturated ketones with hydrosilane mediated by copper(I) salt

    A Mori, A Fujita, H Kajiro, Y Nishihara, T Hiyama

    TETRAHEDRON   55 ( 15 )   4573 - 4582   1999.4

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    DOI: 10.1016/S0040-4020(99)00141-6

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  • A coupling reaction of aryltributyltin with olefins mediated by palladium(II) acetate

    K Hirabayashi, J Ando, Y Nishihara, A Mori, T Hiyama

    SYNLETT   ( 1 )   99 - 101   1999.1

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  • A facile preparation and cyclopropanation of 1-alkenylsilanols Reviewed

    Hirabayashi K, Takahisa E, Nishihara Y, Mori A, Hiyama T

    Bulletin of the Chemical Society of Japan   71 ( 10 )   2409 - 2417   1998

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    Alkenylsilanols are prepared by the reaction of hexamethyltrisiloxane (D3) with alkenyllithiums or alternatively by the reaction of cyclic siloxanes substituted by an alkenyl group with organolithiums and transformed to the corresponding cyclopropylsilanols using diiodomethane and diethylzinc. Lithium alkenylsilanolates, primary products of the preparation, also undergo cyclopropanation. As in the case of allylic alcohols, the silanol functionality is found to enhance the rate of cyclopropanation compared with that of alkenyltrialkylsilane or alkoxydialkylsilane. The obtained cyclopropylsilanols are further converted into the corresponding cyclopropanols by the Tamao oxidation.

    DOI: 10.1246/bcsj.71.2409

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  • Copper(I)-catalyzed cross-coupling reaction of alkynylsilanes with 1-chloroalkynes Reviewed

    Nishihara Y, Ikegashira K, Mori A, Hiyama T

    Tetrahedron Letters   39 ( 23 )   4075 - 4078   1998

  • RhCl(PPh3)(3)/NaI catalyst system for hydrosilylation of 1-alkynes: Stereodivergent syntheses of E- and Z-alkenylsilanes with heteroatom substituents on silicon Reviewed

    Mori A, Takahisa E, Kajiro H, Hirabayashi K, Nishihara Y, Hiyama T

    Chemistry Letters   1998 ( 5 )   443 - 444   1998

  • A novel C-C bond forming reaction of aryl- and alkenylsilanols. A halogen-free Mizoroki-Heck type reaction Reviewed

    Hirabayashi K, Nishihara Y, Mori A, Hiyama T

    Tetrahedron Letters   39 ( 43 )   7893 - 7896   1998

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  • Novel cage polycarbosilanes. Preparation and characterization of dodecamethyl-2,3,5,6,7,8-hexasilabicyclo[2.2.2]octane and its derivatives

    Masaki Shimizu, Naoko Inamasu, Yasushi Nishihara, Tamejiro Hiyama

    Chemistry Letters   ( 11 )   1145 - 1146   1998

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    DOI: 10.1246/cl.1998.1145

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  • Preparation and reactions of Cp2HfRCl, Cp2HfRR′ and hafnacyclopent-2-enes Reviewed

    Yasushi Nishihara, Toyohisa Ishida, Shouquan Huo, Tamotsu Takahashi

    Journal of Organometallic Chemistry   547 ( 2 )   209 - 216   1997.12

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    DOI: 10.1016/S0022-328X(97)00375-6

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  • Highly regio- and diastereo-selective carbon-carbon bond formation reaction of unsymmetrical zirconacyclopentanes using copper salt Reviewed

    T Takahashi, Y Nishihara, R Hara, SQ Huo, M Kotora

    CHEMICAL COMMUNICATIONS   ( 17 )   1599 - 1600   1997.9

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  • Convenient preparative method of alpha,beta-disubstituted cyclopentenone by zirconium promoted intermolecular coupling of an alkyne, EtMgBr (or ethylene) and CO Reviewed

    T Takahashi, ZF Xi, Y Nishihara, SQ Huo, K Kasai, K Aoyagi, Denisov, V, E Negishi

    TETRAHEDRON   53 ( 27 )   9123 - 9134   1997.7

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  • Coupling reaction of alkenylzirconocenes with aryl or alkenyl iodides in the presence of CuCl/Pd(PPh(3))(4) Reviewed

    R Hara, Y Nishihara, PD Landre, T Takahashi

    TETRAHEDRON LETTERS   38 ( 3 )   447 - 450   1997.1

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  • Zirconocene catalyzed dehalogenation of aromatic halides by alkylmagnesium reagents Reviewed

    R Hara, WH Sun, Y Nishihara, T Takahashi

    CHEMISTRY LETTERS   ( 12 )   1251 - 1252   1997

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  • Cu(I)/Pd(0)-catalyzed cross-coupling reaction of alkynylsilanes with aryl or alkenyl triflates: "Sila"-Sonogashira-Hagihara coupling Reviewed

    Nishihara Y, Ikegashira K, Mori A, Hiyama T

    Chemistry Letters   1997 ( 12 )   1233 - 1234   1997

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    Alkynylsilanes reacted with aryl or alkenyl triflates in the presence of 5 mol% of Pd(PPh3)4 and 10 mol% of CuCl in DMF to give the corresponding cross-coupling, namely "sila"-Sonogashira-Hagihara coupling, products in good to excellent yields. The present reaction is highly effective for one-pot synthesis of unsymmetrical diarylacetylenes.

    DOI: 10.1246/cl.1997.1233

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  • Copper(I) salt promoted homo-coupling reaction of organosilanes Reviewed

    Ikegashira K, Nishihara Y, Hirabayashi K, Mori A, Hiyama T

    Chemical Communications   ( 11 )   1039 - 1040   1997

  • TBAHF(2) and TBAH(2)F(3) as activating agents of organosilanes Reviewed

    Mori A, Fujita A, Ikegashira K, Nishihara Y, Hiyama T

    Synlett   ( 6 )   693 - 694   1997

  • Copper(I) salt mediated 1,4-reduction of alpha,beta-unsaturated ketones using hydrosilanes Reviewed

    Mori A, Fujita A, Nishihara Y, Hiyama T

    Chemical Communications   1997 ( 22 )   2159 - 2160   1997

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    DOI: 10.1039/a706032g

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  • Highly selective monofunctionalization of zirconacyclopentanes and dialkylzirconocene complexes Reviewed

    Y Nishihara, K Aoyagi, R Hara, N Suzuki, T Takahashi

    INORGANICA CHIMICA ACTA   252 ( 1-2 )   91 - 99   1996.11

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  • Copper-mediated coupling of zirconacyclopentadienes with dihalo aromatic compounds. Formation of fused aromatic rings Reviewed

    T Takahashi, R Hara, Y Nishihara, M Kotora

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   118 ( 21 )   5154 - 5155   1996.5

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  • High Yield Synthesis and Characterization of Chromaboranes. Comparison of the Geometric, Electronic, and Chemical Properties of an Electronically Unsaturated (.eta.5-C5Me5)2Cr2B4H8 Cluster with Its Saturated Derivative (.eta.5-C5Me5)2Cr2(CO)2B4H6 Reviewed

    Jianwei Ho, Kathryn J. Deck, Yasushi Nishihara, Maoyu Shang, Thomas P. Fehlner

    Journal of the American Chemical Society   117 ( 41 )   10292 - 10299   1995.10

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    DOI: 10.1021/ja00146a013

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  • PRACTICAL AND SELECTIVE METHOD FOR PREPARATION OF CP(2)HFRCL AND CP(2)HFRR' Reviewed

    T TAKAHASHI, Y NISHIHARA, T ISHIDA

    CHEMISTRY LETTERS   ( 2 )   159 - 160   1995.2

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  • Oxidative Addition of 2-Haloalkene to Zirconocene Reviewed

    Tamotsu Takahashi, Martin Kotora, Reinald Fischer, Yasushi Nishihara, Kiyohiko Nakajima, Tamotsu Takahashi

    Journal of the American Chemical Society   117 ( 44 )   11039 - 11040   1995

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/ja00149a040

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  • Preparation and Structure of (Cp*Cr)2B4H8. An Unsaturated Metallaborane Cluster with an Unexpected Structure Reviewed

    Kathryn J. Deck, Yasushi Nishihara, Maoyu Shang, Thomas P. Fehlner

    Journal of the American Chemical Society   116 ( 18 )   8408 - 8409   1994.9

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    DOI: 10.1021/ja00097a075

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  • Cluster chemistry driven by ligand bulk. Significance of the synthesis of nido-1-(.eta.5-C5Me5)Co-2-(.eta.4-C5Me5H)CoB3H8 and its dehydrogenation to nido-2,4-{(.eta.5-C5Me5)Co}2B3H7 Reviewed

    Yasushi Nishihara, Kathryn J. Deck, Maoyu Shang, Thomas P. Fehlner

    Journal of the American Chemical Society   115 ( 25 )   12224 - 12225   1993.12

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/ja00078a095

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Books

  • あれもカガク、これもカガク : サクッと錯体

    中沢, 浩, 西原, 康師, 長谷川, 靖哉

    化学同人  2024.8  ( ISBN:9784759823608

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    Total pages:13, 96p   Language:Japanese

    CiNii Books

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  • ドラマチック有機合成化学-感動の瞬間 100-

    有機合成化学協会( Role: Contributor ,  炭素―炭素単結合の開裂を伴うオレフィンへの付加反応の開発)

    有機合成化学協会  2023.6 

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  • 有機半導体の開発と最新動向

    安達千波矢( Role: Contributor ,  π電子系有機分子において硫黄原子の位置が有機電界効果トランジスタ特性に与える影響(第9章))

    シーエムシー出版  2023.3 

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  • 高性能有機薄膜太陽電池の開発を目指したフェナセン系高性能半導体ポリマーの合成

    森 裕樹, 西原康師( Role: Joint author)

    2022.9 

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  • ジルコニウム錯体 ZrN4S2

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • チタン錯体 TiC2NP

    西原康師( Role: Joint author)

    2019 

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  • チタン錯体 TiB3C2N2O

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • チタン錯体 Ti4O16

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • チタン錯体 Ti2O7

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • ジルコニウム錯体 ZrC10Cl2

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • ジルコニウム錯体 ZrC3NI2

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • チタン錯体 TiPd2H2O6P8

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • チタン錯体 Ti2N9Cl

    西原康師( Role: Joint author)

    朝倉書店  2019 

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  • ハートウィグ有機遷移金属化学

    Hartwig, John F. (John Frederick), 小宮, 三四郎, 穐田, 宗隆, 岩澤, 伸治, 石井, 洋一 (有機化学), 伊藤, 肇, 上野, 圭司, 大江, 浩一, 河内, 卓彌, 近藤, 輝幸, 中尾, 佳亮, 西原, 康師, 水田, 勉

    東京化学同人  2015.3  ( ISBN:9784807908516

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    Total pages:xxiii, p506-1038   Language:Japanese

    CiNii Books

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  • 有機ジルコニウム化合物 (19.2.3)

    丸善出版  2015 

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  • ハートウィグ有機遷移金属化学

    Hartwig, John F. (John Frederick), 小宮, 三四郎, 穐田, 宗隆, 岩澤, 伸治, 石井, 洋一 (有機化学), 伊藤, 肇, 上野, 圭司, 大江, 浩一, 河内, 卓彌, 近藤, 輝幸, 中尾, 佳亮, 西原, 康師, 水田, 勉

    東京化学同人  2014.4  ( ISBN:9784807908509

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    Total pages:xxiv, 503, 12p   Language:Japanese

    CiNii Books

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  • ハートウィグ 有機遷移金属化学(上)

    東京化学同人  2014  ( ISBN:4807908502

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  • ハートウィグ有機遷移金属化学

    Hartwig, John F. (John Frederick), 小宮, 三四郎, 穐田, 宗隆, 岩澤, 伸治, 石井, 洋一 (有機化学), 伊藤, 肇, 上野, 圭司, 大江, 浩一, 河内, 卓彌, 近藤, 輝幸, 中尾, 佳亮, 西原, 康師, 水田, 勉

    東京化学同人  2014  ( ISBN:9784807908509

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    Total pages:2冊   Language:Japanese

    CiNii Books

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  • Applied Cross-Coupling Reactions (Lecture Notes in Chemistry 80)

    SpringerーVerlag  2012 

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  • 高機能デバイス用耐熱性高分子材料の最新技術

    シーエムシー出版  2011 

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  • 使える!有機合成反応241実践ガイド

    化学同人  2010 

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  • 高性能蓄電池-設計基礎研究から開発・評価まで-

    株式会社 エヌ・ティー・エス  2009 

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  • 最新リチウムイオン二次電池〜安全性向上および高機能性に向けた材料開発〜

    株式会社情報機構  2008 

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  • 光学用透明樹脂における材料設計と応用技術

    株式会社技術情報協会  2007 

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  • 液晶便覧

    丸善  2000 

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MISC

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Presentations

  • Palladium-Catalyzed Decarbonylative Halogenation of Acyl Fluorides via Reductive Elimination of the C-X Bond Invited

    Yasushi Nishihara

    the 17th International Conference on Cutting-Edge Organic Chemistry in Asia (ICCEOCA-17)  2024.11.30 

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    Event date: 2024.11.29 - 2024.12.1

    Language:English   Presentation type:Poster presentation  

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  • Photovoltaic properties of organic thin-film solar cells based on semiconducting polymers Invited

    Yasushi Nishihara

    12th Asian Network for Natural and Unnatural Materials (ANNUM-XII)  2024.7.22 

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    Event date: 2024.7.20

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Nickel or Palladium-Catalyzed Decarbonylative Transformations of Acyl Fluorides and Chlorides Invited

    Yasushi Nishihara

    the 30th International Conference on Organometallic Chemistry (ICOMC-2024)  2024.7.17 

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    Event date: 2024.7.14 - 2024.7.18

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Photovoltaic Properties of Organic Thin-Film Solar Cells based on Semiconducting Polymers Invited

    Yasushi Nishihara

    Advances in Materials for Sustainable Energy 2024  2024.5.20 

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    Event date: 2024.5.19 - 2024.5.20

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Photovoltaic properties of organic thin-film solar cells based on semiconducting polymers Invited

    Yasushi Nishihara

    2023.12.15 

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    Event date: 2023.12.13 - 2023.12.15

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Crystal Structures and Charge Transport Properties of Alkyl-substituted Phenanthro[2,1-b:7,8-b']dithiophenes Invited

    Yasushi Nishihara

    the 16th International Conference on Cutting-Edge Organic Chemistry in Asia (ICCEOCA-16)  2023.12.3 

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    Event date: 2023.11.30 - 2023.12.4

    Language:English   Presentation type:Poster presentation  

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  • クロスカップリングを利用するπ 共役系分子の精密合成と有機半導体材料への応用 Invited

    西原 康師

    東工大化生研 非常勤講師講演会  2023.10.20 

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    Event date: 2023.10.20

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • 脱カルボニル化を伴う フッ化アシルの変換反応 Invited

    西原 康師

    2023年度機能性多核錯体シンポジウム  2023.9.23 

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    Event date: 2023.9.23

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

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  • クロスカップリングを用いる含硫黄フェナセン型分子の合成と有機半導体としての利用 Invited

    西原 康師

    ヘテロ原子部会2022年度第1回懇話会  2022.7.29 

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    Event date: 2022.7.29

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • Phenanthro[1,2-b:1,7-b’]dithiophene (PDT): Application to organic field-effect transistors and photovoltaics Invited

    Yasushi Nishihara

    ICCHD-20  2020.1.8 

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    Event date: 2020.1.7 - 2020.1.9

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Development of Organic Solar Cells Based on New Acceptor Units in Semiconducting Polymers Invited

    Yasushi Nishihara

    2019 Annual Meeting of the International Collaborative ‘111’ Project Based on “Reticular Chemistry of Porous Polymers”  2019.11.16 

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    Event date: 2019.11.16 - 2019.11.17

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Phenanthro[1,2-b:1,7-b’]dithiophene (PDT): Application to Organic Field-Effect Transistors (OFETs) and Organic Photovoltaics (OPVs) Invited

    Yasushi Nishihara

    The 45th Congress on Science and Technology of Thailand (STT45)  2019.10.8 

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    Event date: 2019.10.7 - 2019.10.9

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Phenanthro[1,2-b:1,7-b’]dithiophene (PDT): Application to Organic Field-Effect Transistors (OFETs) and Organic Photovoltaics (OPVs) Invited

    Yasushi Nishihara

    International Symposium on Catalysis and Fine Chemicals 2018 (C&FC2018)  2018.10.10 

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    Event date: 2018.10.10 - 2018.10.14

    Language:Japanese  

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  • 機能性マテリアル創出のための有機金属錯体触媒 Invited

    西原康師

    第7回 CSJ 化学フェスタ 2017  2017.10.18 

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    Event date: 2017.10.17 - 2017.10.19

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • クロスカップリングを利用するπ共役系分子の精密合成と有機半導体材料への応用 Invited

    西原康師

    第106回触媒化学融合研究センター講演会  2024.1.25 

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  • Nickel or Palladium-Catalyzed Decarbonylative Transformations of Acyl Fluorides Invited

    Yasushi Nishihara

    The International Symposium on Advanced Science and Technology (ISAST)  2020.10.16 

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  • 錯体から有機半導体まで―私が資源研で学んだ多くのこと― Invited

    西原康師

    資源化学研究所創立80年記念学術シンポジウム  2019.11.22 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • クロスカップリングを用いる有機半導体材料の創製 Invited

    西原康師

    第2回SPERC 計算化学講演会~有機材料創製ミニシンポジウム~  2019.11.13 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • クロスカップリングを利用するフェナセン型分子の合成と電子エネルギーデバイスへの応用

    第29回万有札幌シンポジウム  2017 

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  • Effects of alkyl side-chains and molecular weights on photovoltaic property in phenanthrodithiophene-based semiconducting polymers

    PACCON2017  2017 

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  • 含硫黄フェナセン型分子の開発と有機電子エネルギーデバイス素子への応用

    第43回中国四国地区高分子講座  2017 

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  • Development of High-Performance Organic Photovoltaic Cells Containing the Phenanthrodithiophene (PDT) Unit

    E-MRS (European Materials Research Society) 2016 Fall  2016 

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  • Synthesis of Substituted Picenes through Pd-Catalyzed Cross-Coupling Reaction/Annulation Sequences and Their Physicochemical Properties

    International Symposium on Frontiers of Organometallic Chemistry  2013 

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  • Highly Regio- and Stereoselective Synthesis of Multi-substituted Olefins from Alkynylboronates

    International Symposium of Homogenous Reactivity  2013 

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  • クロスカップリング反応を用いるフェナセン型分子の合成と物性

    分子研シンポジウム  2013 

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  • パラジウム触媒によるノルボルナジエンのシアノエステル化反応の開発と開環メタセシス重合によるポリシクロオレフィンの合成

    高分子学会中国四国支部 高分子研究科  2012 

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  • Highly Selective Synthesis of Multi-substituted Olefins through Carbozirconation of Alkynylboronates and Sequential Cross-Couplings

    2nd International Conference on Molecular & Functional Catalysis (ICMFC-2),  2012 

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  • 遷移金属を用いるカルボメタル化による選択的多置換オレフィンの合成

    近畿化学協会 有機金属部会平成22年度第4回例会  2011 

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  • アルキニルボロン酸エステルのカルボジルコネーションとそれに続く根岸および鈴木-宮浦カップリングによる多置換オレフィン類の位置および立体選択的合成

    有機合成化学協会中国四国支部 ミニシンポジウム2011 in 愛媛  2011 

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  • 開環メタセシス重合とそれに続く水素化によるシアノ基とエステル基を同時に有するポリノルボルネンの合成

    第60回高分子討論会  2011 

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  • Highly Regio- and Stereoselective Synthesis of Multi-alkylated Olefins by Zirconocene-Mediated Transformation of 1-Alkynylboronates and Sequential Negishi and Suzuki-Miyaura Cross-Coupling Reactions

    14th Asian Chemical Congress (14th ACC)  2011 

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  • Synthesis of Doubly Functionalized Norbornenes and Ru-Catalyzed Ring-Opening Metathesis Polymerization

    China-Japan Symposium on Catalytic Organic Synthesis  2010 

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  • 銅触媒によるアルキニルシランとヨウ化アリールの交差カップリング反応

    第57回有機金属化学討論会  2010 

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  • Palladium/Copper-Cocatalyzed Sonogashir-Type Cross-Coupling Reactions of Aryl Halides with Alkynylsilanes via a Direct Carbon-Silicon Bond Cleavage

    The 24th International Conference on Organometallic Chemistry (ICOMC2010)  2010 

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  • Palladium/Copper-Catalyzed Sila-Sonogashira Cross-Coupling Reactions of Aryl Halides with Alkynylsilanes via a Direct C-Si Bond Activation under a Neutral Condition

    11th Tetrahedron Symposium  2010 

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  • パラジウム錯体を触媒として用いるシアノエステル化反応と反応機構の解明

    大阪市立大学談話会  2010 

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  • パラジウム触媒によるノルボルネン類のシアノエステル化反応の開発と新規電子光学ポリマー合成への応用

    有機化学研究会(白鷺セミナー)  2010 

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  • Highly Regio- and Stereoselective Synthesis of Multi-substituted Olefins from Alkynylmetallic Species and Its Application toward Anti-cancer Agents

    第3回 高度医療都市を創出する未来技術国際シンポジウム-抗がん剤・抗感染症創薬のための標的分子探求-  2010 

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  • Highly Efficient and Selective Synthesis of Multisubstituted Olefins from Alkynylboronates Mediated by a Zirconocene Complex

    The International Chemical Congress of Pacific Basin Societies (Pacifichem 2010)  2010 

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  • Zirconocene-Mediated Highly Regio- and Stereoselective Synthesis of Multi-substituted Olefins from Alkynylmetallic Species

    The 6th International Symposium on Integrated Synthesis (ISIS-6)  2010 

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  • Cross-Coupling Reactions of Aryl Halides with Alkynylsilanes Catalyzed by Palladium and Copper

    The 16th Malaysian Chemical Congress (16MCC), Kuala Lumpur  2010 

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  • Synthesis of Doubly Functionalized Norbornenes and Control of the Polymer Molecular Weights by Living Ring-Opening Metathesis Polymerization

    Second Japan-Singapore Bilateral Symposium on Catalysis  2009 

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  • Synthesis and Optical Rotation of Chiral Doubly Functionalized Polar Polynorbornenes

    The First International Symposium of Chemistry and Biochemistry in East Asia  2009 

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  • Reactions of Alkynylstannanes with a Zirconocene Complex

    The First International Symposium of Chemistry and Biochemistry in East Asia  2009 

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  • ジルコニウム錯体を用いる乳癌の治療薬タモキシフェンの効率的合成

    第2回高度医療都市を創出する未来技術国際シンポジウム~先端テクノロジーの総合戦略 がんと感染症を考える~  2009 

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  • ジルコノセン錯体を用いる立体選択的アルケニルシラン合成と交差カップリング反応における置換基効果

    日本化学会第89春季年会  2009 

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  • パラジウム触媒を用いるアルキニルシランとヨウ化アリールの交差カップリング反応

    日本化学会第89春季年会  2009 

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  • ジルコノセン錯体とアルキニルシランを用いる高選択的多置換アルケニルシランの合成

    日本化学会第89春季年会  2009 

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  • コバルト触媒を用いる根岸型アルキル-アリールクロスカップリング

    日本化学会第89春季年会  2009 

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  • Palladium-Catalyzed Cyanoesterification of Norbornenes and Mechanistic Implications

    Symposium in Commemoration of International Exchange Agreement between Faculty of Science, University of Copenhagen, Denmark and Graduate School of Natural Science and Technlogy, Okayama University  2009 

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  • Palladium-catalyzed sila-Sonogashira Cross-Coupling Reactions of Alkynylsilanes with Aryl Iodides under Neutral Conditions

    The First International Symposium of Chemistry and Biochemistry in East Asia  2009 

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  • Synthesis and Examination of polymerization activity of Nickel(II) Complexes Tethered by Nitrogen-Oxygen Bidentate Ligand

    The First International Symposium of Chemistry and Biochemistry in East Asia  2009 

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  • 遷移金属錯体による結合活性化法の開発と機能性分子合成への応用

    第26回有機合成化学セミナー  2009 

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  • Highly Efficient and Selective Synthesis of Anticancer Agent Tamoxifen Mediated by a Zirconocene Complex

    13th Asian Chemical Congress (13th ACC)  2009 

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  • 二置換型極性ノルボルネンのHPLC による光学分割と開環メタセシス重合によるキラルポリマーの合成

    第56回有機金属化学討論会  2009 

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  • ジルコノセン錯体とアルキニルスズ化合物の反応

    日本化学会第89春季年会  2009 

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  • ジルコニウム錯体を用いる乳癌の治療薬タモキシフェンの効率的合成

    第2回高度医療都市を創出する未来技術国際シンポジウム〜先端テクノロジーの総合戦略 がんと感染症を考える〜  2009 

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  • ジルコノセン錯体と有機ホウ素化合物を用いる効率的かつ高選択的多置換オレフィン合成

    第93回有機合成シンポジウム  2008 

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  • Palladium-Catalyzed Thioesterification with Arylthioformates across Norbornadiene

    Taiwan-Japan International Symposium on Organic Chemistru and Molecular Science  2008 

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  • 乳癌の抗癌剤タモキシフェンの効率的全合成

    高度医療都市を創出する未来技術シンポジウム〜先端テクノロジーの総合戦略 がんと感染症を考える〜  2008 

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  • Synthesis and Structural Analysis of Nickel(II) Complexes Tethered by Nitrogen-Oxygen Bidentate Ligands

    Taiwan-Japan International Symposium on Organic Chemistru and Molecular Science  2008 

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  • Palladium-Catalyzed Cyanoesterification of Norbornenes and Its Application to Opto-electronic Polymers

    Taiwan-Japan International Symposium on Organic Chemistru and Molecular Science  2008 

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  • パラジウム触媒を用いるノルボルナジエンのチオエステル化反応

    日本化学会第88春季年会  2008 

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  • ジルコノセン(II) 錯体とアルキニルシランの反応

    日本化学会第88春季年会  2008 

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  • 光学活性2置換型極性ポリノルボルネン類の合成と旋光性

    日本化学会第88春季年会  2008 

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  • 二置換型極性ノルボルネンの合成およびリビング開環メタセシス重合によるポリマーの分子量制御

    日本化学会第88春季年会  2008 

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  • 新規トリポッド配位子を有するロジウム触媒によるアリール亜鉛化合物のアルキル化

    日本化学会第88春季年会  2008 

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  • ロジウム触媒を用いるアリール亜鉛化合物の酸化的カルボニル化によるジアリールケトン合成

    日本化学会第88春季年会  2008 

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  • Synthesis of Unsymmetrical Diarylethynes by the Cross-Coupling Reaction ofAlkynylsilanes with Aryl Chlorides

    The 15th International Symposium on Organosilicon Chemistry  2008 

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  • Efficient Synthesis of an Anti-cancer Agent, (Z)-Tamoxifen from an Alkynylboronate Mediated by a Zirconocene Complex

    Third International Conference on Advanced Organic Synthesis Directed toward the Ultimate Efficiency and Practicability  2008 

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  • パラジウム触媒によるアルキニルシランと塩化アリールのシラ薗頭カップリング反応

    第55回有機金属化学討論会  2008 

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  • 酸素-窒素型二座配位子を有するニッケル(II)錯体の合成と構造解析

    第55回有機金属化学討論会  2008 

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  • 根岸型アルキル-アリールクロスカップリング:配位性官能基を有するホスフィン配位子によるβ-水素脱離の抑制

    第55回有機金属化学討論会  2008 

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  • Zirconocene-Mediated Highly Efficient and Selective Synthesis of Multisubstituted Olefins from Alkynylboronates and Its Application

    The 13th International Coference on Boron Chemistry (ImeBoron XIII),  2008 

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  • Synthesis and Thermal Properties of Novel Polynorbornenes by Ru-Initiated Ring-Opening Metathesis Polymerization and the Subsequent Ru-Catalyzed Hydrogenation

    The 23rd International Coference on Organometallic Chemistry (ICOMC2008)  2008 

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  • パラジウム触媒によるノルボルネン類のシアノエステル化反応と新規機能性光学材料への応用 (依頼講演)

    第23回若手化学者のためのセミナー(化学道場)  2007 

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  • Zirconocene-Mediated Highly Efficient and Selective Synthesis of Multisubstituted Olefins from Alkynylboronates

    The 11th Osaka City University International Conference "New Horizons of Molecular Science Dispatched from Asia"  2007 

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  • Synthesis of Novel Cycloolefin Polymers by Ru-Initiated Ring-Opening Metathesis Polymerization and Subsequent Ru-Catalyzed Hydrogenation of Doubly Functionalized Norbornenes with Both Cyano and Ester Groups

    The 14th Organometallic Chemistry towards Organic Synthesis (OMCOS-14)  2007 

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  • Zirconocene-Mediated Highly Selective and Facile Synthesis of 1,2-Diaryl-1-butenes from Alkynylboronates

    Second International Conference on Advanced Organic Synthesis Directed toward the Ultimate Efficiency and Practicability International Conference on Asymmetric Organocatalysis  2007 

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  • 含ホウ素有機―無機複合ポリマーのリチウムイオン伝導性と全固体二次電池への応用

    日本化学会第87春季年会  2007 

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  • ジルコノセン錯体を用いる1,2-ジアリールブテンの位置および立体選択的合成

    日本化学会第87春季年会  2007 

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  • ルテニウムヒドリド触媒による二置換型極性ポリノルボルネン類の水素添加

    日本化学会第87春季年会  2007 

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  • 二置換型極性ポリノルボルネン類のエステル基上の置換基効果

    日本化学会第87春季年会  2007 

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  • オレフィンメタセシスにより得られた2官能性アリールボロン酸をモノマーとするポリマー電解質の合成

    日本化学会第87春季年会  2007 

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  • 新規テトラアリールペンタボラート骨格を含むリチウムイオン2次電池のための有機―無機複合ポリマー電解質の合成

    日本化学会第87春季年会  2007 

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  • ロジウム触媒を用いるアリール亜鉛化合物とホスホリル基を持つアルキルヨウ化物とのクロスカップリング反応

    日本化学会第87春季年会  2007 

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  • Zirconocene-Mediated Total Synthesis of (Z)-Tamoxifen Starting from 1-Alkynylboronates

    3rd China-Japan Symposium On Chemistry  2007 

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  • パラジウム触媒を用いるノルボルナジエンへのチオエステル化反応

    2007年日本化学会西日本大会  2007 

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  • ルテニウムヒドリド触媒による二置換型極性ポリノルボルネン類の水素化反応と置換基効果

    2007年日本化学会西日本大会  2007 

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  • 触媒的クロスカップリングによるホスホリル置換アルキルアレーン類の合成

    2007年日本化学会西日本大会  2007 

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  • ロジウム触媒を用いるアリール金属化合物の酸化的カップリング

    2007年日本化学会西日本大会  2007 

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  • ジルコノセン錯体による多置換オレフィン類の位置選択的合成

    2007年日本化学会西日本大会  2007 

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  • パラジウム触媒によるノルボルネン類のシアノエステル化の中間体-アルコキシ(シアノ)パラジウム(II)錯体の合成と構造

    第54回有機金属化学討論会  2007 

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  • ルテニウム触媒による二置換型極性ポリノルボルネン類の水素添加とエステル基上の置換基効果

    第54回有機金属化学討論会  2007 

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  • ジルコノセン錯体とアルケニルホウ素化合物を用いる多置換オレフィン類の効率的かつ高選択的合成

    第54回有機金属化学討論会  2007 

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  • アルコキシカルボニル(シアノ)パラジウム (II) 錯体の合成と反応

    日本化学会第86春季年会  2006 

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  • パラジウム触媒を用いるノルボルナジエンのシアノエステル化反応

    日本化学会第86春季年会  2006 

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  • アリール亜鉛化合物を用いる官能基をもつアリールアレンの合成

    日本化学会第86春季年会  2006 

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  • ロジウム触媒を用いるアリール亜鉛化合物とハロゲン化アリールとのクロスカップリング

    日本化学会第86春季年会  2006 

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  • パラ-フェニレンジ亜鉛化合物の逐次的クロスカップリング反応:配位子効果の検討

    日本化学会第86春季年会  2006 

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  • 極性シクロオレフィンポリマーの開発を目指した置換ノルボルネン類の合成と反応性

    「シクロオレフィンポリマーの特性と応用」講習会  2006 

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  • 新規機能性光学材料を指向したシアノ基とエステル基を同時に有するポリシクロオレフィンの合成

    2006年日本化学会西日本大会 2H06  2006 

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  • Synthesis of Doubly Functionalized Polar Norbornenes by the Palladium-Catalyzed Cyanoesterification

    The 10th International KYOTO Conference on New Aspects of Organic Chemistry (IKCOC-10), PA-016  2006 

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  • アルコキシカルボニル(シアノ)パラジウム (II) 錯体とノルボルナジエンの反応

    第56回錯体化学討論会  2006 

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  • ルテニウムカルベン錯体を開始剤として用いる2官能性極性ノルボルネン誘導体のリビング開環メタセシス重合

    第53回有機金属化学討論会  2006 

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  • ノルボルネン類のシアノエステル化反応とその生成物をモノマーとする開環メタセシス重合反応〜新規光学系材料の実用化を目指して〜

    若手研究者の会  2006 

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  • 二置換型極性ノルボルネン類の合成と重合反応

    第55回高分子学会年次大会  2006 

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  • リチウムイオン電池の大型化を目指した含ホウ素有機-無機複合固体電解質の創製

    「自動車用リチウムイオン二次電池の高出力化,長寿命化と安全性評価」講習会  2006 

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  • 二置換型極性ノルボルネン類の開環メタセシス重合

    日本化学会第86春季年会  2006 

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  • リチウムイオン電池の電解質を指向した含ホウ素有機―無機複合ポリマーの合成と物性(2)

    第46回電池討論会  2005 

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  • リチウムイオン電池の電解質を指向した含ホウ素有機―無機複合ポリマーの合成と物性(1)

    第46回電池討論会  2005 

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  • パラジウム触媒を用いるノルボルネン類のシアノエステル化反応

    第52回有機金属討論会  2005 

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  • Copper-Mediated Homocoupling Reactions of Alkynylboronates Affording Symmetrical Conjugate Diynes

    12th International Conference on Boron Chemistry (MEBORON-XII)  2005 

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  • A Preparative Synthetic Method of Ketones by Cross-Coupling Reactions of Acid Chlorides with Organoboron Compounds

    The 13rd Organometallic Chemistry towards Organic Synthesis (OMCOS-13)  2005 

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  • 銅塩とパラジウム触媒を用いるアリールボロン酸と酸クロリドの交差カップリング反応

    日本化学会第85春季年会  2005 

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  • フェニレンジ亜鉛化合物への求電子剤の逐次的導入

    日本化学会第85春季年会  2005 

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  • ロジウム触媒を用いるアリール亜鉛化合物のアルキル化

    日本化学会第85春季年会  2005 

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  • 銅塩を用いるアルキニルボロン酸エステルと酸クロリドの交差カップリング反応

    日本化学会第85春季年会  2005 

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  • 銅塩を用いるアルキニルボロン酸エステル類のホモカップリング反応

    日本化学会第85春季年会  2005 

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  • アルキニルボロン酸エステルと銅塩の反応によるアルキニル銅種の生成とその反応性

    日本化学会第85春季年会  2005 

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  • ホスフィド架橋をもつ環状三核ヒドリド白金錯体と有機ホウ素化合物との反応

    第84日本化学会春季年会  2004 

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  • アリール配位子へのフッ素原子の導入による重要中間体の単離と構造解析

    第11回フッ素化学セミナー「含フッ素リガンドの展開」  2004 

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  • ホスフィド架橋をもつ環状三核ヒドリド白金錯体と有機ケイ素化合物の反応

    第84日本化学会春季年会  2004 

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  • アリール(ヒドロキソ)パラジウム(II) 錯体と有機ホウ素化合物の反応

    第84日本化学会春季年会  2004 

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  • メトキソおよびヒドロキソロジウム(I) 錯体とアリールボロン酸エステルの反応

    第84日本化学会春季年会  2004 

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  • アリール(ハロゲノ)白金(II) 錯体と有機ホウ素化合物の反応におけるホスフィン配位子の効果

    第53回錯体化学討論会  2003 

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  • 遷移金属錯体と有機ホウ素化合物の反応—トランスメタル化反応を鍵として

    第36回有機金属化学若手の会夏の学校  2003 

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  • Synthesis and Structural Characterization of the First Unsymmetrical Diarylpalladium Complexes trans-Pd(C6F5)(2,4,6-C6F3H2)(PEt3)2 from Arylboronic Acid 2,4,6-C6F3H2B(OH)2 and trans-PdI(C6F5)(PEt3)2

    The 12nd Organometallic Chemistry directed towards Organic Synthesis (OMCOS-12)  2003 

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  • 低原子価白金錯体と二級ホスフィンとの反応によるジホスフィド架橋多核白金(II) 錯体の合成

    第81日本化学会春季年会  2003 

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  • アリール(ヨード)パラジウム(II) および白金(II)錯体とアリールボロン酸の反応におけるホスフィン類の効果

    第81日本化学会春季年会  2003 

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  • アリーロキソまたはメトキソロジウム(I) 錯体とボロン酸エステルとの反応

    第81日本化学会春季年会  2003 

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  • アリールオキソロジウム(I) 錯体とアリールボロン酸との反応による新規ペンタボラートアニオンの合成

    第81日本化学会春季年会  2003 

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  • アリール(トリフラート)パラジウム(II)錯体とアリールボロン酸の反応による非対称ジアリールパラジウム(II)錯体の生成

    第53回錯体化学討論会  2003 

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  • アルコキソロジウム(I) 錯体 [Rh(OR)(cod)]2 (R = Me, Et, tBu) とアリールボロン酸エステルとの反応

    第53回錯体化学討論会  2003 

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  • 架橋有機リン配位子をもつ直線状白金多核錯体の合成

    第53回錯体化学討論会  2003 

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  • 選択的な3員環の開環を伴う1-メチレン-4-フェニル-スピロ[2.2]ペンタンとロジウム(I) ヒドリド錯体との反応

    第52回錯体化学討論会  2002 

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  • Synthesis of Tetraarylpentaborates from Reaction of Arylboronic Acids with an Aryloxorhodium Complex.

    35th International Conference on Coordination Chemistry  2002 

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  • アリーロキソまたはメトキソロジウム(I) 錯体とボロン酸エステルとの反応

    第81日本化学会春季年会  2002 

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  • 白金触媒を用いるメチレンシクロプパン類の異性化反応

    第81日本化学会春季年会  2002 

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  • ロジウム(I) ヒドリド錯体と1-メチレン-4-フェニル-スピロ[2.2]ペンタンとの反応

    第81日本化学会春季年会  2002 

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  • ロジウム(I)アリーロキソ錯体とアリールボロン酸との反応によるスピロ型ボロキシナートアニオンの合成

    第81日本化学会春季年会  2002 

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  • アリールオキソロジウム(I)錯体とアリールボロン酸との反応による含ホウ素アニオンの合成

    子研研究会,無機金属化学の展望―全元素化学を目指して  2002 

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  • アリール(ハロゲノ)白金(II)錯体とアリールボロン酸の反応におけるトランスメタル化

    第52回錯体化学討論会  2002 

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  • ロジウム(I)アリールオキソ錯体とアリールボロン酸エステルとの反応

    第52回錯体化学討論会  2002 

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  • シリルロジウム(III) およびイリジウム(III) 錯体のケイ素—塩素結合生成反応—中心金属,シリル配位子による反応性の違い

    第47回有機金属化学討論会  2002 

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  • Preparation, Characterization, and Reactivities of Novel Boryloxorhodium Complexes.

    The 224th ACS National Meeting  2002 

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  • Rhodium(III) and Iridium(III) Complexes with Halo and Alkoxysilyl Ligands. Relative Stability of the Metal–Silicon Bond and Elimination of Halosilanes.

    20th International Conference on Organometallic Chemistry  2002 

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  • Highly selective C-C bond activation of methylenecyclopropanes by transition metal complexes

    シンポジウム:有機金属化学の最先端  2002 

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  • Vaska 錯体とヒドロシラン類との反応におけるケイ素上の置換基の違いとクロロシランの還元的脱離速度に関する研究

    第7回ケイ素化学協会シンポジウム  2002 

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  • メチレンシクロプロパンの化学–錯体から有機合成まで–,

    錯体化学若手の会ミニシンポジウム  2002 

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  • 有機パラジウム錯体とアリールホウ素化合物の反応

    第52回錯体化学討論会  2002 

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  • アリーロキソおよびヒドロキソロジウム(I)錯体と有機ホウ素化合物との反応

    第51回錯体化学討論会  2001 

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  • イリジウム(I)ヒドリド錯体と2,2-ジアルキル-1-メチレンシクロプロパンとの反応

    第79日本化学会春季年会  2001 

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  • 2,2-ジアルキル置換メチレンシクロプロパンとロジウムおよびイリジウムヒドリド錯体との反応—ビニル錯体の生成と異性化—

    第51回錯体化学討論会  2001 

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  • Ring-Opening Isomerization of Methylenecyclopropopanes into 1,3-Dienes Promoted by Transition Metal Hydrido Complexes.

    Post-OMCOS  2001 

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  • 白金触媒によるメチレンシクロプロパン類のヒドロシリル化反応における中間錯体の単離と同定

    第51回錯体化学討論会  2001 

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  • ロジウム(I)ヒドロキソ錯体と有機ボロン酸との反応

    第79日本化学会春季年会  2001 

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  • 遷移金属錯体触媒を用いるメチレンシクロプロパン類のヒドロシリル化反応

    第79日本化学会春季年会  2001 

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  • 白金(II)カチオン錯体へのシラノール上の有機基のトランスメタル化反応—ケイ素–炭素結合の活性化における機構の考察—

    第79日本化学会春季年会  2001 

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  • ロジウム(I)ヒドリド錯体と2,2-ジアルキル-1-メチレンシクロプロパンとの反応

    第79日本化学会春季年会  2001 

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  • ハロゲノ(ヒドリド)シリルロジウム(III) 錯体の安定性と反応性に及ぼすハロゲンの影響

    第6回ケイ素化学協会シンポジウム  2001 

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  • 白金錯体を触媒とするメチレンシクロプロパン類のヒドロシリル化反応

    第47回有機金属化学討論会  2001 

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  • リン配位子をもたないロジウム(I) 錯体と有機ボロン酸との反応

    第51回錯体化学討論会  2001 

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  • 銅(I) 塩を用いるアルキニルシランのカップリング反応を利用するビスフェノールA誘導体ユニットを含む高分子の合成

    第78日本化学会春季年会  2000 

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  • ロジウム (I)ヒドリド錯体とメチレンシクロプロパンの反応とその機構的考察

    第78日本化学会春季年会  2000 

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  • アルキニル基のケイ素から銅へのトランスメタル化の機構的考察

    第78日本化学会春季年会  2000 

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  • ロジウム(I)およびイリジウム(I)ヒドリド錯体を用いる1-メチレンシクロプロパン類の新規な炭素–炭素,炭素-水素結合の活性化

    第47回有機金属討論会  2000 

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  • ロジウム(I)アリーロキシ錯体の有機金属化合物との反応

    第50回錯体化学討論会  2000 

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  • 新しいシリルロジウム錯体の合成とアセチレンとの反応

    第50回錯体化学討論会  2000 

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  • メチレンシクロプロパンの炭素–炭素結合の活性化を伴うロジウム(I)錯体上での配位子骨格変換反応

    第50回錯体化学討論会  2000 

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  • 白金(II)錯体によるシラノールのケイ素–炭素結合の活性化と有機基のトランスメタル化反応

    第50回錯体化学討論会  2000 

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  • Isolation of Intermediates of Ring-opening Isomerization of Methylenecyclopropanes Promoted by Rh(I) and Ir(I) Complexes..

    34th International Conference on Coordination Chemistry  2000 

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  • シランジオールの合成とパラジウム触媒を用いるカップリング反応

    第78日本化学会春季年会  2000 

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  • 3,3,3-トリフルオロプロピル基を有するシラノールの交差カップリングと Mizoroki-Heck 型反応

    第78日本化学会春季年会  2000 

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  • New C-C and C-H Bond Activation of 1-Methylenecyclopropanes Promoted by Hydrido Complexes of Rh(I) and Ir(I).

    2000 International Chemical Congress of Pacific Basin Societies (Pacifichem ‘2000)  2000 

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  • フッ化テトラブチルアンモニウムを活性化剤に用いる末端アルキンの交差カップリング反応

    第46回有機金属討論会  2000 

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  • 同一分子内にアルキニルシランとトリフラートを有する化合物の交差カップリングを用いる重合反応

    第78日本化学会春季年会  2000 

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  • アルキニルシランとアリールトリフラートの交差カップリング反応を利用する高分子合成

    第76日本化学会春季年会  1999 

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  • 立体選択的ヒドロシリル化を利用する含ケイ素高分子の合成

    第76日本化学会春季年会  1999 

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  • パラジウム触媒を用いるシラノールの交差カップリング反応

    第76日本化学会春季年会  1999 

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  • シラノールおよび有機スズ化合物を用いたMizoroki-Heck 型反応

    第76日本化学会春季年会  1999 

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  • ケイ素上にキラリティーを持つシラノールの合成と光学分割

    第76日本化学会春季年会  1999 

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  • フッ素の配位を利用したSc(OTf)3による脱アセチル化反応

    第76日本化学会春季年会  1999 

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  • アルキニルシランのホモカップリング反応を利用する高分子合成

    第76日本化学会春季年会  1999 

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  • オレフィン・ホスフィン2座配位子をもつジルコノセン錯体の合成と構造

    第49錯体化学討論会  1999 

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  • 銅(I) 塩によるアルキニルシランのカップリング反応を利用する高分子合成

    第77日本化学会秋季年会  1999 

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  • シラノール,シランジオールを用いる炭素—炭素結合形成反応

    第46回有機金属討論会  1999 

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  • 銅(I) 塩を用いる有機ケイ素化合物のカップリング反応とトランスメタル化における機構的考察

    第46回有機金属討論  1999 

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  • Palladium-Catalyzed Carbon-Carbon Bond Forming Reactions of Silanols

    The 216th ACS Meeting  1999 

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  • Homo- and Cross-Coupling Reactions of Alkynylsilanes Mediated by a Copper(I) Salt

    The 216th ACS Meeting  1999 

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Industrial property rights

  • 3,10-ジヒドロキシピセン、3,10-ジヒドロキシピセンの製造方法、屈折率向上剤、並びに、ポリエステル樹脂

    西原康師, 小松伸一, 伊田領二

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    Application no:特願2021-019797  Date applied:2021.2.10

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  • アントラビスチアジアゾール誘導体及びこれを用いて得られるπ共役系重合体

    西原康師, 西永周平, 高橋竜輔, 森 裕樹

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    Application no:特願2016-044905  Date applied:2016.3.8

    Announcement no:特開2017-160150  Date announced:2017.9.14

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  • ピセン誘導体、光電変換材料及び光電変換素子

    西原康師, 兵頭恵太, 森 裕樹

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    Application no:特願2016-555186  Date applied:2015.10.14

    Announcement no:特開2014-240483  Date announced:2014.12.25

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  • ピセノジチオフェン化合物、有機半導体材料、有機半導体層、有機半導体

    西原康師

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    Application no:特願2015-033715  Date applied:2015.2.24

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  • ピセン誘導体、光電変換材料及び光電変換素子

    西原 康師

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    Application no:特願2014-098630  Date applied:2014.5.12

    Announcement no:特開2014-240483  Date announced:2014.12.25

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  • ピセン及びその誘導体の製造方法

    西原康師, 常 寧輝, 岩﨑真之

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    Application no:特願2013-101582  Date applied:2013.5.13

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  • トリアリールエチルエテン誘導体の製造方法

    西原康師

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    Application no:特願2006-252247  Date applied:2006.9.19

    特開2008-74711

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  • エンド位に2個の極性基を有するノルボルネン誘導体,そのメタセシス開環重合体およびそれらの製造方法

    西原康師, 井上善彰

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    Application no:特願2006-64308  Date applied:2006.3.9

    特願2006-064308

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  • ノルボルネン誘導体の開環重合体およびその製造方法

    西原康師, 井上善彰, 高木謙太郎, 田靡正雄, 羽村 敏

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    Application no:特願2005-267127  Date applied:2005.9.14

    特願2005-267127

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  • 2-フルオロ-1-オール類の製造方法

    上代 洋, 森 敦紀, 西原康師, 檜山爲次郎

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    Application no:特願平11-145420  Date applied:1999.5.25

    特開2000-327605

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Awards

  • 2019年度 有機合成化学協会 企業冠賞 富士フィルム・機能性材料化学賞

    2020.2   クロスカップリングを用いるπ共役系有機分子の効率的合成と電子デバイスへの応用

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  • Asian Core Program (ACP) Lectureship Award (Taiwan)

    2018.11   Phenanthro[1,2-b:8,7-b’]dithiophene (PDT): Application to Organic Photovoltaics

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  • 日本学術振興会 科研費審査委員表彰

    2017.8  

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  • 平成29年度 岡山工学振興会 内山勇三科学技術賞

    2017.7   高性能な有機半導体を指向したπ共役分子の設計、合成、機能解明

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  • 平成24年度 岡山工学振興会 科学技術賞

    2012.7   有機薄膜太陽電池用素子ピセン誘導体の高効率合成

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  • 平成21年度 岡山県文化奨励賞(第52回)

    2010.2  

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  • 2008年度有機合成化学奨励賞

    2009.2   遷移金属錯体による結合活性化法の開発と機能性分子合成への応用

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    Country:Japan

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  • 第88春季年会 優秀講演賞(産業)

    2008.5   二置換型極性ノルボルネンの合成およびリビング開環メタセシス重合によるポリマーの分子量制御

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  • 平成19年度岡山大学若手トップリサーチャー

    2007.12  

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    Country:Japan

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  • 第1回岡山大学理学部教育貢献賞

    2007.3  

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  • 第15回有機合成化学協会研究企画賞(日本触媒)

    2003.2   含ホウ素有機無機複合ポリマーの合成とイオン導電性の発現に関する研究

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Research Projects

  • 特異な電子構造を有する含硫黄フェナセン系分子のトランジスタ特性

    2024.06 - 2025.03

    岡山県特別電源所在県科学技術振興事業 

    西原 康師

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  • 次世代の再生可能エネルギーとして期待される高効率有機薄膜太陽電池の開発

    2023.04 - 2025.03

    高橋産業経済研究財団 

    西原 康師

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  • 特異な電子構造を有する含硫黄フェナセン系分子群の伝導特性

    Grant number:21H02014  2021.04 - 2025.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    西原 康師, 岡本 敏宏, 森 裕樹

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    Grant amount:\17420000 ( Direct expense: \13400000 、 Indirect expense:\4020000 )

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  • 多官能基を有する多環芳香族化合物の合成と物性評価

    2020.04 - 2023.03

    JXTG エネルギー株式会社  共同研究

    西原康師

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  • 新規π共役系有機分子の効率的な合成および有機電界効果トランジスタへの応用

    2020.04 - 2021.03

    岡山県特別電源所在県科学技術振興事業 

    西原康師

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  • 新規ヘテロアセン化合物類を用いた電子材料への応用研究

    2019.04 - 2021.03

    東ソー有機化学株式会社  共同研究

    西原康師

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  • ジルコノセン錯体を用いる高選択的四置換オレフィンの合成

    2019.04 - 2020.03

    第一稀元素化学工業  2019年度 第一稀元素化学工業助成金 

    西原康師

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  • 原油中に含まれるチオフェン環を有する硫黄化合物の有効利用検討

    2019.04 - 2020.03

    JXTG エネルギー株式会社 

    西原康師

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  • 次世代の再生可能エネルギーとして期待される高効率有機薄膜太陽電池の開発

    2018.04 - 2020.03

    公益財団法人JKA  補助事業部機械振興事業 

    西原康師

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  • 新規アクセプターを含む有機半導体ポリマーの精密合成と有機薄膜太陽電池への応用

    Grant number:15H00751  2015.04 - 2017.03

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    西原 康師

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    Grant amount:\6240000 ( Direct expense: \4800000 、 Indirect expense:\1440000 )

    ドナー・アクセプター (D-A) 型ポリマーは、高性能半導体ポリマーを開発する上で極めて有用な手法として知られている。これまでに高性能デバイス作製のため、様々な新規 π 電子骨格が設計され、これらを導入した高性能ポリマーが合成されてきた。本研究では、有機薄膜太陽電池の光電変換効率の向上を目的として、活性層の重要な構成ユニットであるアクセプターユニットを新規に設計、合成することを目的としている。昨年度は、高性能半導体材料開発のため、新たな拡張π電子系電子不足芳香環であるアントラ[1,2-c:5,6-c’]ビス[1,2,5]チアジアゾールを導入したポリマー (PATz4T-o6OD) の合成に成功した。さらに、このポリマーを用いた有機薄膜太陽電池において、5.7% の変換効率を達成した。しかしながら、強い電子供与基であるアルコキシ基の導入により、ATz 骨格の電子親和力が低下し、可視光領域の吸収範囲が狭くなるという問題点があった。そこで今年度は、ATz 骨格に対して電子求引性基であるアルコキシカルボニル基を導入することで、吸収領域を拡張し、さらなる変換効率の向上を目指した。その結果、溶媒にクロロベンゼン、添加剤として 1 vol% の 1,8-ジヨードオクタン、p/n 比が 1:2 のとき、最大で 2.9% の光電変換効率を示した (Jsc = 7.85 mA cm-2、Voc = 0.78 V、FF = 0.48)。

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  • Installation of polar functional groups via carbon -carbon bond cleavage and its application toward the development of functional organic materials

    Grant number:24550119  2012.04 - 2015.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    NISHIHARA Yasushi

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    Grant amount:\5460000 ( Direct expense: \4200000 、 Indirect expense:\1260000 )

    In this report, PI describes various cyanoformates reacts with arynes and isocyanides in the presence of a cationic palladium catalyst to afford five-membered cyano-substituted iminoisobenzofurans as the major products, along with their isomeric α-iminonitriles as the minor products via three-component coupling reactions. The products obtained from this process are hardly accessible by conventional methods. When the once isolated iminoisobenzofurans are treated with diisobutylaluminum hydride (DIBAL-H) or AlMe3, their transformation into α-iminonitriles is observed.
    In addition, an efficient method for the direct conversion of cyano-substituted iminoisobenzofurans into corresponding alkyl 2-cyanobenzoates has been developed. This transformation proceeds via cleavages of C-C, C-O, and C-N bonds in starting iminoisobenzofurans. Generation of isocyanide as the by-product in more thermodynamic manner in DFT calculations also supports the experimental results.

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  • 有機合成中間体化合物の新規合成法の開発

    2010.04 - 2024.03

    錦海化学株式会社  共同研究

    西原康師

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  • Development of New Cross-Couplings Catalyzed by Group IX Metals.

    Grant number:20550043  2008 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    NISHIHARA Yasushi, HANAYA Tadashi, SUEISHI Yoshimi

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    Grant amount:\4810000 ( Direct expense: \3700000 、 Indirect expense:\1110000 )

    Catalytic cross-coupling between carbon electrophiles andorganometallic nucleophiles is one of the most useful method to construct carbon-carbonbonds in organic synthesis. In this research, group 9 metals were used as the catalyst in place of conventional group 10 metals like nickel and palladium, intending to open new areas of cross-coupling.
    As the results, two methods were developed, where, by the catalysis with rhodium, otherwise difficult cross-couplings between alkyl electrophiles and arylzinc nucleophiles successfully take place. The Rh catalysts also achieved unprecedented cross-couplingreactions between arylzinc compounds and unsaturated molecules like carbon monoxideand alkenes by the assistance of oxidants.

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  • ジルコノセン錯体を用いる高効率かつ高選択的拡張π電子系の創出

    Grant number:19020047  2007 - 2008

    日本学術振興会  科学研究費助成事業  特定領域研究

    西原 康師

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    Grant amount:\4600000 ( Direct expense: \4600000 )

    これまでに低原子価のジルコノセンーエチレン錯体とアルキンの酸化的カップリングにより, ジルコナシクロペンテンが効率よく生成することが広く知られている。また, 以前われわれの研究室では, アリール基で置換されたアルキニルホウ素化合物にジルコノセン(II)錯体を作用させることにより, 高選択的にジルコナシクロペンテンが形成されることを報告している。さらに, そのジルコナシクロペンテンに対して逐次的に炭素-炭素結合を伸長することにより位置および立体選択的な多置換オレフィンの合成を達成した。
    本論文では, 有機ホウ素化合物との比較をおこなうため, 有機ケイ素化合物に着目した。具体的には, 化学量論量の低原子価ジルコノセン錯体と基質としてアリール基で置換されたアルキニルシランを用い, ケイ素の特長を利用した高選択的な炭素-炭素結合形成反応を達成した。その結果, 様々な多置換アルケニルシランを合成することに成功した。
    この反応では, 高選択的にジルコナシクロプロペンが生成することが鍵となっている。生成したジルコナシクロプロペンを加水分解することにより, (Z)-アルケニルシランを高収率で得た。また, ジルコナシクロプロペンに対して, 位置選択的な炭素-炭素結合形成をおこなうことにより, アリル基やエステル基などの官能基を導入することにも成功した。さらに, 同一反応容器内で生成したアルケニルジルコノセン錯体に対してアリール基やアルキル基の導入をおこなうことにより, 三置換および四置換アルケニルシランを高位置および立体選択的に合成することに成功した。

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  • ジルコノセン錯体を用いる高選択的拡張π電子系の創出

    Grant number:18037050  2006

    日本学術振興会  科学研究費助成事業  特定領域研究

    西原 康師

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    Grant amount:\1600000 ( Direct expense: \1600000 )

    炭素-炭素二重結合を有するオレフィン類は,有機化学における最も基本的な化合物のひとつである。一置換および二置換オレフィンについては,優れた合成法が数多く開発されているのに対して,三置換および四置換オレフィンについては,位置および立体異性体を含めると6種類の幾何異性体が存在しうるため,そのうちの1種類だけを高選択的に合成する方法の開発は極めて重要である。特に,オレフィン上の置換基がアリール基,アルケニル基,アルキニル基などのπ系置換基を有する一連の多置換オレフィン類は,「最小π電子系炭素-炭素二重結合をコアにもつ興味深い拡張π電子系」とみなせるため,新しい機能性p電子系としても非常に興味深い化合物群であると考えられる。
    平成18年度は,化学量論量の低原子価のジルコナシクロペンタン錯体に対して,芳香族アルキニルボロン酸エステルを反応させた結果,位置および立体選択的に1-ボラ-2-アリール-1-ブテン類が生成することがわかった。さらに,この生成物に対して,ヨウ化アリールとの鈴木-宮浦交差カップリング反応をおこなうと,1,2-ジアリール-1-ブテン類を高収率で得ることに成功した。また,アルキニルボロン酸エステルの代わりに非対称ジアリールアセチレンで第1の反応をおこない,直接生成する3置換オレフィンについて,アルキニルボロン酸エステルを用いる2段階の反応生成物との選択性の比較をおこなった。非対称ジアリールアセチレンを基質として用いた場合では,ジルコナシクロペンテン形成時に十分な位置選択性が得られず,加水分解生成物は,位置異性体の混合物として得られたのに対し,アルキニルボロン酸エステルを用いる酸化的環化反応/鈴木-宮浦カップリングによる2段階の手法では,三置換オレフィンである1,2-ジアリール-1-ブテンを位置および立体選択的に得るための有用な方法であることがわかった。

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  • 有機遷移金属錯体におけるトランスメタル化反応の自在制御

    Grant number:16033220  2004 - 2005

    日本学術振興会  科学研究費助成事業  特定領域研究

    小坂田 耕太郎, 西原 康師

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    Grant amount:\4200000 ( Direct expense: \4200000 )

    有機ボロン酸のパラジウム、ロジウム、白金等の後期遷移金属とのトランスメタル化反応は、これらの金属錯体を触媒とする有機合成反応の鍵段階として重要であるが、その詳細はわかっていなかった。本研究によって、白金錯体とのトランスメタル化反応の機構を、いかに示す通り解明することが出来た。
    有機ボロン酸は酸化銀の存在下で二価白金錯体と反応させると、ボロン酸の共役塩基であるボロナト基が配位した新しい白金錯体を生成する。2つのボロナト配位子を有するシス型の白金錯体は配位子の水酸基が脱水環化した環状構造錯体に変化する。前者の錯体は酸化銀の存在下でさらに芳香族ボロン酸と反応して、トランスメタル化によるアリール白金錯体を生成した。後者の環状錯体は添加物なしでも芳香族ボロン酸と反応してアリール白金錯体を生成し、さらに、条件によってはヒドロキソ白金錯体を生成していることを明らかに出来た。これらの結果に基づいて有機ボロン酸と白金錯体とのトランスメタル化反応の機構をまとめた。すなわち、有機ボロン酸、塩基、白金錯体の反応によって生じるヒドロキソ白金錯体、アリールボロナト白金錯体のいずれも、芳香族ボロン酸のトランスメタル化反応によってアリール白金錯体を生成する。また、この2つの錯体は通常の条件で平衡にあるため、反応に用いる塩基の種類や濃度、ボロン酸の濃度に応じて複数の経路のうち速度論的に有利な経路によってトランスメタル化が進行する。
    ヒドロキソ錯体のトランスメタル化反応での役割について確認するために、ヒドロキソ架橋二核白金錯体と有機ボロン酸との反応を行なった。塩基等の添加なしで、アリール白金錯体が生成したことから、ヒドロキソ錯体を中間体とするトランスメタル化反応経路の存在も明らかになった。

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  • 有機遷移金属錯体におけるトランスメタル化反応の自在制御

    Grant number:15036223  2003

    日本学術振興会  科学研究費助成事業  特定領域研究

    小坂田 耕太郎, 西原 康師

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    Grant amount:\1900000 ( Direct expense: \1900000 )

    有機ボロン酸とパラジウム錯体との反応を検討した。ホスフィン配位子をもつフルオロアリール(ヨード)パラジウム錯体は酸化銀の存在下アリールボロン酸と反応し、ジアリールパラジウム錯体を生成した。この反応はボロン酸のアリール基がパラジウムにトランスメタル化したものであり、パラジウムに結合していたアリール基をフッ素化しビアリールの還元的脱離を抑制したときにはじめて単離することが可能になった。X線構造解析、NMRスペクトルなどから錯体の構造を明らかにした。
    このトランスメタル化反応の中間に生成する錯体はフルオロアリール(ヒドロキソ)パラジウム錯体であることを明らかにした。すなわち、アリールボロン酸を加えない系で反応をおこなった場合には^1H-NMRでOH水素のシグナルを観測でき、かつ単一の錯体種が生成していることが^<31>PNMRで確かめられたので上記の錯体が生成していると結論づけた。その他のデータも中間体構造を支持した。さらに、この中間体はアリールボロン酸と反応してジアリールパラジウム錯体を生じることからヒドロキソパラジウム中間体を経由するトランスメタル化機構を明らかにした。これは合成化学的に重要なSuzuki-Miyaura反応のトランスメタル化過程を明らかにしたものとして重要である。
    アリール(ヨード)白金錯体とアリールボロン酸との反応ではヒドロキソ錯体やジアリール錯体は生成せずボリルオキソ白金錯体が生成し、これをX線構造解析で明らかにすることができた。ヒドロキソロジウム錯体とアリールボロン酸との反応も種を検討し、1,5-シクロオクタジエン配位子を有する錯体が酸化銀の存在下配位子を添加することによってアリールロジウム錯体へ変換されることを明らかにした。

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  • 遷移金属ヒドリド錯体を用いるメチレンシクロアルカン類の炭素-炭素結合の活性化

    Grant number:13740412  2001 - 2002

    日本学術振興会  科学研究費助成事業  若手研究(B)

    西原 康師

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    Grant amount:\2100000 ( Direct expense: \2100000 )

    本研究は,遷移金属ヒドリド錯体を用いることにより小員環化合物であるメチレンシクロアルカン類の炭素-炭素結合を活性化し,最終的にはそれらの反応を用いて新規の高い有機合成反応へ応用していくことを目的としている。
    まず,2,2-ジフェニル-1-メチレンシクロプロパンとロジウムヒドリド錯体の反応により,室温では3員環が開裂した結果3-ブテニルロジウム錯体が生成し,さらに加熱条件によりフェニル基上の炭素-水素結合が活性化されて2-プロペニル-o-フェニレンロジウム錯体が生成する。これら一連の反応は,メチレンシクロプロパンのもつ環の歪みエネルギーのよって環の解裂,つまり炭素-炭素結合の活性化により起こったと解釈できる。
    さらに,その素反応を有機合成反応に応用した。ロジウムまたは,白金錯体を触媒として2,2-ジフェニル-1-メチレンシクロプロパンとトリエチルシランとの反応をおこなってヒドロシリル化生成物を得た。興味深いことにロジウム錯体を触媒として用いたときにはシクロプロパン環開裂して開環するのに対して,白金錯体を触媒として用いた場合には,3員環が開環しないままでヒドロシリル化生成物が得られた。
    本研究では,遷移金属ヒドリド錯体を用いるメチレンシクロアルカン類の炭素ム炭素結合の活性化について検討し,それを利用した有機合成反応を達成した。異なる金属を用いる選択的なメチレンシクロプロパン類のヒドロシリル化反応により,本研究で明らかにした量論的な反応における知見を元に様々な有機合成反応への応用が期待できるので,本研究により小員環化合物の量論的,触媒的な炭素-炭素結合の活性化は重要な結果を与えたと言える。

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  • 銅(I)塩を用いる有機ケイ素化合物のカップリング反応とその機能性材料への応用

    Grant number:10750621  1998 - 1999

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    西原 康師

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    Grant amount:\2400000 ( Direct expense: \2400000 )

    本研究は,銅(I)塩を用いることにより有機ケイ素化合物の炭素ミケイ素結合を活性化し,炭素ミ炭素結合を形成し,最終的にはそれらの反応を用いて機能性高分子材料の合成へ応用していくことを目的としている。
    まず,アルキニルシランと銅(I)塩の反応により,アルキニル基がケイ素から銅に移動することがわかったので,その知見を基に,パラジウム/銅(I)塩共触媒系によるアルキニルシランとアリールトリフラートとの交差カップリング反応をおこなった。この反応は末端アセチレンの保護基として多用されるトリメチルシリル基をそのまま直接的に交差カップリング反応がおこなえる点で,有機合成上有用な反応である。
    さらに,その有機素反応を高分子合成に応用することを検討した。二官能性のアルキニルシランと二官能性のアリールトリフラートとをモノマーとして用いて,上記の交差カップリング反応をおこなった結果,期待した高分子を合成することに成功した。合成した高分子の分光学的,物理的特性を測定した結果,その中のいくつかはエレクトロルミネセンス材料としての期待が持てる高分子であった。
    本研究ではケイ素から銅(I)塩へのトランスメタル化について検討し,それを利用した高分子合成反応を達成した。銅(I)塩を用いる有機ケイ素化合物の新規トランスメタル化反応により,本研究で明らかにした以外にも様々な反応が期待できるので,本研究により有機ケイ素化合物の有機合成的価値がさらに高まったとといえる。

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  • 根岸英一先生を偲んで Newspaper, magazine

    山陽新聞  2021.6

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    Author:Myself 

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