Updated on 2025/06/13

写真a

 
EMA Tadashi
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Professor
Position
Professor
External link

Degree

  • 博士(工学) ( 1994.5   京都大学 )

Research Interests

  • 有機合成化学・生物有機化学

Education

  • Kyoto University   工学研究科   合成化学専攻

    1989 - 1994

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    Country: Japan

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  • Kyoto University   工学部   合成化学科

    1985 - 1989

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    Country: Japan

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Research History

  • 岡山大学 学術研究院環境生命自然科学学域 教授

    2023

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  • 岡山大学 学術研究院自然科学学域 教授

    2021 - 2023

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  • 岡山大学 大学院自然科学研究科 教授

    2012 - 2021

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  • 岡山大学 大学院自然科学研究科 准教授

    2007 - 2012

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  • 岡山大学 大学院自然科学研究科 助教授

    2005 - 2007

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  • 岡山大学 工学部 助教授

    2002 - 2005

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  • 岡山大学 工学部 助手

    1994 - 2002

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Professional Memberships

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Committee Memberships

  • 有機合成化学協会   理事・中国四国支部長  

    2023 - 2024   

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  • ホスト-ゲスト・超分子化学研究会   幹事  

    2022   

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    Committee type:Academic society

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  • 基礎有機化学会   理事  

    2022   

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    Committee type:Academic society

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  • 有機合成化学協会   中国四国支部事務局(平成21年度〜令和3年度)(事務局代表 平成25年度〜令和元年度)  

    2009   

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    Committee type:Academic society

    有機合成化学協会

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  • 日本農芸化学会   中四国支部 評議員(平成17年度〜平成20年度、平成23年度〜平成24年度)  

    2008   

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    Committee type:Academic society

    日本農芸化学会

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  • 生体触媒化学研究会   幹事  

    2004   

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    Committee type:Academic society

    生体触媒化学研究会

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  • 日本化学会   生体機能関連化学部会 幹事(平成15年度〜平成21年度) 同上 ニュースレター編集委員(平成16年度〜平成21年度)  

    1988   

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    Committee type:Academic society

    日本化学会

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Papers

  • Selective and Divergent Synthesis of Naphthalene- and Phenanthrene-Fused Azahelicenes by Turning Rearrangement On or Off

    Chihiro Maeda, Sayaka Michishita, Tadashi Ema

    Chemistry - A European Journal   2025

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

    DOI: 10.1002/chem.202404325

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  • B,N-Embedded Helical Nanographenes Showing an Ion-Triggered Chiroptical Switching Function Reviewed

    Chihiro Maeda, Sayaka Michishita, Issa Yasutomo, Tadashi Ema

    Angewandte Chemie - International Edition   2025

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

    DOI: 10.1002/anie.202418546

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  • Terpolymerization reactions of epoxides, CO<inf>2</inf>, and the third monomers toward sustainable CO<inf>2</inf>-based polymers with controllable chemical and physical properties Invited Reviewed

    Koichi Nakaoka, Tadashi Ema

    Chemical Communications   61 ( 1 )   46 - 60   2025

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

    DOI: 10.1039/d4cc04615c

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  • Synthesis and Postfunctionalization of Acrylate-Appended Poly(cyclohexene carbonate)s: Modulation of Properties of CO<inf>2</inf>-Based Polymers Reviewed

    Chihiro Maeda, Hina Inoue, Tadashi Ema

    Macromolecules   58 ( 3 )   1571 - 1577   2025

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

    DOI: 10.1021/acs.macromol.4c02881

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  • Recent development of azahelicenes showing circularly polarized luminescence Invited Reviewed

    Chihiro Maeda, Tadashi Ema

    Chemical Communications   61 ( 25 )   4757 - 4773   2025

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    This feature article summarizes the recent developments of azahelicenes showing circularly polarized luminescence.

    DOI: 10.1039/d4cc06307d

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  • Terpolymerization of Propylene Oxide, CO<inf>2</inf>, and p-Toluenesulfonyl Isocyanate for the Synthesis of Poly(urethane-carbonate): p-Toluenesulfonyl Isocyanate Acts as a Backbiting Suppressor

    Satoshi Muranaka, Io Yamamoto, Tadashi Ema

    ACS Applied Polymer Materials   6 ( 24 )   15366 - 15374   2024.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsapm.4c03431

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  • Cyclic Azahelicene Dimers Showing Bright Circularly Polarized Luminescence and Selective Fluoride Recognition Reviewed

    Chihiro Maeda, Issa Yasutomo, Tadashi Ema

    Angewandte Chemie - International Edition   63 ( 30 )   e202404149   2024.7

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

    DOI: 10.1002/anie.202404149

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  • Temperature-Induced Sign Inversion of Circularly Polarized Luminescence of Binaphthyl-Bridged Tetrathiapyrenophanes Reviewed

    Kazuto Takaishi, Fumiya Yoshinami, Yoshihiro Sato, Tadashi Ema

    Chemistry - A European Journal   30 ( 32 )   e202400866   2024.6

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

    DOI: 10.1002/chem.202400866

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  • Skeletal Formation of Carbocycles with CO<inf>2</inf>: Selective Synthesis of Indolo[3,2-b]carbazoles or Cyclophanes from Indoles, CO<inf>2</inf>, and Phenylsilane Reviewed

    Sha Li, Shoko Nakahara, Taishin Adachi, Takumi Murata, Kazuto Takaishi, Tadashi Ema

    Journal of the American Chemical Society   146 ( 22 )   14935 - 14941   2024.6

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    DOI: 10.1021/jacs.4c04097

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  • Synthesis of hydroxy acids via the light-driven carboxylation of epoxides with CO<inf>2</inf> Reviewed

    Chihiro Maeda, Ren Kumemoto, Rio Tanaka, Tadashi Ema

    Chemistry Letters   53 ( 5 )   upae086   2024.5

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    DOI: 10.1093/chemle/upae086

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  • Terpolymerizations of cyclohexene oxide, CO<inf>2</inf>, and isocyanates or isothiocyanates for the synthesis of poly(carbonate-urethane)s or poly(carbonate-thioimidocarbonate)s Reviewed

    Koichi Nakaoka, Satoshi Muranaka, Io Yamamoto, Tadashi Ema

    Polymer Chemistry   15 ( 8 )   707 - 713   2024.1

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

    DOI: 10.1039/d3py01165h

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  • Selective Conversions of CO<inf>2</inf> into Value-Added Chemicals via Cooperative Catalysis Using Multifunctional Catalysts Reviewed

    Tadashi Ema

    Bulletin of the Chemical Society of Japan   96 ( 7 )   693 - 701   2023.7

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1246/bcsj.20230099

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  • Synthesis and Photophysical Properties of Dihetero[8]circulenes Reviewed

    Chihiro Maeda, Koki Akiyama, Tadashi Ema

    Organic Letters   25 ( 21 )   3932 - 3935   2023.6

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    DOI: 10.1021/acs.orglett.3c01304

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  • One‐Pot Synthesis of Aldehydes or Alcohols from CO 2 via Formamides or Silyl Formates Reviewed

    Fan Yang, Yuta Saiki, Koichi Nakaoka, Tadashi Ema

    Advanced Synthesis & Catalysis   365 ( 6 )   877 - 883   2023.3

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    DOI: 10.1002/adsc.202300031

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  • One-Pot Synthesis of Dihydropyrans via CO2 Reduction and Domino Knoevenagel/oxa-Diels–Alder Reactions Reviewed

    Kazuto Takaishi, Ritsuki Nishimura, Yuha Toda, Hajime Morishita, Tadashi Ema

    Organic Letters   25 ( 9 )   1370 - 1374   2023.3

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

    DOI: 10.1021/acs.orglett.3c00047

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  • Circularly polarized luminescence from porphyrin-containing (supra)molecular systems Invited Reviewed

    Chihiro Maeda, Issa Yasutomo, Kazuto Takaishi, Tadashi Ema

    Journal of Porphyrins and Phthalocyanines   27 ( 07n10 )   903 - 911   2023.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:World Scientific Pub Co Pte Ltd  

    DOI: 10.1142/s108842462330001x

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  • Circularly polarized luminescence in molecular recognition systems: Recent achievements Invited Reviewed

    Kazuto Takaishi, Chihiro Maeda, Tadashi Ema

    Chirality   35 ( 2 )   92 - 103   2023.2

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

    DOI: 10.1002/chir.23522

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/chir.23522

  • Cu-catalyzed carboxylation of organoboronic acid pinacol esters with CO2 Reviewed

    Chihiro Maeda, Takumi Cho, Ren Kumemoto, Tadashi Ema

    Organic & Biomolecular Chemistry   21 ( 32 )   6565 - 6571   2023

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    DOI: 10.1039/D3OB00938F

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  • Catalytic synthesis and physical properties of CO2-based cross-linked poly(cyclohexene carbonate)s Reviewed

    Chihiro Maeda, Kenta Kawabata, Kaito Niki, Yuma Sako, Takumi Okihara, Tadashi Ema

    Polymer Chemistry   14 ( 37 )   4338 - 4343   2023

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Bifunctional aluminum porphyrins catalyzed the terpolymerization of cyclohexene oxide (CHO), bis(CHO), and CO2 to give cross-linked polycarbonates.

    DOI: 10.1039/D3PY00870C

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  • Synthesis of Enamines, Aldehydes, and Nitriles from CO2: Scope of the One-Pot Strategy via Formamides Reviewed

    Nakaoka, K., Guo, C., Saiki, Y., Furukawa, S., Ema, T.

    Journal of Organic Chemistry   88 ( 21 )   15444 - 15451   2023

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    DOI: 10.1021/acs.joc.2c01666

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  • Synthesis of Trimethylene Carbonates and Polycarbonates from Oxetanes and CO2 Using Bifunctional Aluminum Porphyrin Catalysts Reviewed

    Chihiro Maeda, Hina Inoue, Ayano Ichiki, Takumi Okihara, Tadashi Ema

    ACS Catalysis   12 ( 22 )   13042 - 13049   2022.10

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    DOI: 10.1021/acscatal.2c03583

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  • Mechanism of BPh3‐Catalyzed N‐Methylation of Amines with CO2 and Phenylsilane: Cooperative Activation of Hydrosilane Reviewed

    Manussada Ratanasak, Takumi Murata, Taishin Adachi, Jun‐ya Hasegawa, Tadashi Ema

    Chemistry – A European Journal   28 ( 58 )   e202202210   2022.10

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    DOI: 10.1002/chem.202202210

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/chem.202202210

  • Binaphthyl‐Bridged Pyrenophanes: Intense Circularly Polarized Luminescence Based on a D 2 Symmetry Strategy Reviewed

    Kazuto Takaishi, Sho Murakami, Fumiya Yoshinami, Tadashi Ema

    Angewandte Chemie International Edition   61 ( 26 )   e202204609   2022.7

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    DOI: 10.1002/anie.202204609

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  • Ruthenium Complexes Bearing Axially Chiral Bipyridyls: The Mismatched Diastereomer Showed Red Circularly Polarized Phosphorescence Reviewed

    Kazuto Takaishi, Yusuke Nakatsuka, Hitomi Asano, Yuya Yamada, Tadashi Ema

    Chemistry – A European Journal   28 ( 6 )   e202104212   2022.1

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    DOI: 10.1002/chem.202104212

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  • Deoxygenative CO2 conversions with triphenylborane and phenylsilane in the presence of secondary amines or nitrogen-containing aromatics Reviewed

    Takumi Murata, Mahoko Hiyoshi, Shinsuke Maekawa, Yuta Saiki, Manussada Ratanasak, Jun-ya Hasegawa, Tadashi Ema

    Green Chemistry   24 ( 6 )   2385 - 2390   2022

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    DOI: 10.1039/D1GC04599G

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  • Enhancement of protein thermostability by three consecutive mutations using loop-walking method and machine learning Reviewed

    Kazunori Yoshida, Shun Kawai, Masaya Fujitani, Satoshi Koikeda, Ryuji Kato, Tadashi Ema

    Scientific Reports   11 ( 1 )   2021.12

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    DOI: 10.1038/s41598-021-91339-4

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  • Chiral exciplex dyes showing circularly polarized luminescence: Extension of the excimer chirality rule

    Kazuto Takaishi, Sho Murakami, Kazuhiro Iwachido, Tadashi Ema

    Chemical Science   12 ( 43 )   14570 - 14576   2021.11

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    DOI: 10.1039/d1sc04403f

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  • Facile Synthesis of Azahelicenes and Diaza[8]circulenes through the Intramolecular Scholl Reaction

    Chihiro Maeda, Shuichi Nomoto, Koki Akiyama, Takayuki Tanaka, Tadashi Ema

    Chemistry - A European Journal   27 ( 63 )   15699 - 15705   2021.11

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    DOI: 10.1002/chem.202102269

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  • C-Methylenation of anilines and indoles with CO<inf>2</inf>and hydrosilane using a pentanuclear zinc complex catalyst

    Kazuto Takaishi, Hiroyasu Kosugi, Ritsuki Nishimura, Yuya Yamada, Tadashi Ema

    Chemical Communications   57 ( 65 )   8083 - 8086   2021.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/d1cc03675k

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  • Circularly Polarized Luminescence Liquids Based on Siloxybinaphthyls: Best Binaphthyl Dihedral Angle in the Excited State

    Kazuto Takaishi, Tomoki Matsumoto, Miyu Kawataka, Tadashi Ema

    Angewandte Chemie - International Edition   60 ( 18 )   9968 - 9972   2021.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/anie.202101226

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  • Synthesis and electronic properties of carbazole-based core-modified diporphyrins showing near infrared absorption

    Chihiro Maeda, Takuma Shirakawa, Tadashi Ema

    Chemical Communications   56 ( 95 )   15048 - 15051   2020.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/d0cc06289h

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  • Aggregation-Induced Circularly Polarized Luminescence from Boron Complexes with a Carbazolyl Schiff Base

    Chihiro Maeda, Shuichi Nomoto, Kazuto Takaishi, Tadashi Ema

    Chemistry - A European Journal   26 ( 57 )   13016 - 13021   2020.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/chem.202001463

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  • Tetrameric and Hexameric Porphyrin Nanorings: Template Synthesis and Photophysical Properties

    Chihiro Maeda, Shoki Toyama, Naoki Okada, Kazuto Takaishi, Seongsoo Kang, Dongho Kim, Tadashi Ema

    Journal of the American Chemical Society   142 ( 37 )   15661 - 15666   2020.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.0c07707

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  • Aluminum porphyrins with quaternary ammonium halides as catalysts for copolymerization of cyclohexene oxide and CO<inf>2</inf>: metal-ligand cooperative catalysis

    Jingyuan Deng, Manussada Ratanasak, Yuma Sako, Hideki Tokuda, Chihiro Maeda, Jun Ya Hasegawa, Kyoko Nozaki, Tadashi Ema

    Chemical Science   11 ( 22 )   5669 - 5675   2020.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/d0sc01609h

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  • Synthesis of silyl formates, formamides, and aldehydesviasolvent-free organocatalytic hydrosilylation of CO<inf>2</inf>

    Takumi Murata, Mahoko Hiyoshi, Manussada Ratanasak, Jun Ya Hasegawa, Tadashi Ema

    Chemical Communications   56 ( 43 )   5783 - 5786   2020.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/d0cc01371d

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  • Azahelicene-Fused BODIPY Analogues Showing Circularly Polarized Luminescence

    Chihiro Maeda, Keiji Nagahata, Takuma Shirakawa, Tadashi Ema

    Angewandte Chemie - International Edition   59 ( 20 )   7813 - 7817   2020.5

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    DOI: 10.1002/anie.202001186

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  • Minimization of Amounts of Catalyst and Solvent in NHC-Catalyzed Benzoin Reactions of Solid Aldehydes: Mechanistic Consideration of Solid-to-Solid Conversion and Total Synthesis of Isodarparvinol B

    Kenta Iwai, Masakazu Ono, Yoshiko Nanjo, Tadashi Ema

    ACS Omega   5 ( 17 )   10207 - 10216   2020.5

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    DOI: 10.1021/acsomega.0c01141

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  • Synthesis and Chiroptical Properties of Chiral Carbazole-Based BODIPYs

    Chihiro Maeda, Keita Suka, Keiji Nagahata, Kazuto Takaishi, Tadashi Ema

    Chemistry - A European Journal   26 ( 19 )   4261 - 4268   2020.4

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    DOI: 10.1002/chem.201904954

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  • Solvent-Induced Sign Inversion of Circularly Polarized Luminescence: Control of Excimer Chirality by Hydrogen Bonding

    Kazuto Takaishi, Kazuhiro Iwachido, Tadashi Ema

    Journal of the American Chemical Society   142 ( 4 )   1774 - 1779   2020.1

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    DOI: 10.1021/jacs.9b13184

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  • Chiral carbazole-based porphyrins showing absorption and circular dichroism in the near-infrared region

    Chihiro Maeda, Tadashi Ema

    Journal of Porphyrins and Phthalocyanines   24 ( 1-3 )   247 - 251   2020.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1142/S1088424619500937

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  • Macrocyclic multinuclear metal complexes acting as catalysts for organic synthesis Reviewed

    Bikash Dev Nath, Kazuto Takaishi, Tadashi Ema

    Catalysis Science and Technology   10 ( 1 )   12 - 34   2020

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    DOI: 10.1039/c9cy01894h

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  • Axially Chiral peri-Xanthenoxanthenes as a Circularly Polarized Luminophore

    Kazuto Takaishi, Sakiko Hinoide, Tomoki Matsumoto, Tadashi Ema

    Journal of the American Chemical Society   141 ( 30 )   11852 - 11857   2019.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.9b06240

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  • Unexpected Macrocyclic Multinuclear Zinc and Nickel Complexes that Function as Multitasking Catalysts for CO<inf>2</inf> Fixations

    Kazuto Takaishi, Bikash Dev Nath, Yuya Yamada, Hiroyasu Kosugi, Tadashi Ema

    Angewandte Chemie - International Edition   58 ( 29 )   9984 - 9988   2019.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/anie.201904224

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  • Evolving Fluorophores into Circularly Polarized Luminophores with a Chiral Naphthalene Tetramer: Proposal of Excimer Chirality Rule for Circularly Polarized Luminescence

    Kazuto Takaishi, Kazuhiro Iwachido, Ryosuke Takehana, Masanobu Uchiyama, Tadashi Ema

    Journal of the American Chemical Society   141 ( 15 )   6185 - 6190   2019.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.9b02582

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  • Chiral Bifunctional Metalloporphyrin Catalysts for Kinetic Resolution of Epoxides with Carbon Dioxide

    Chihiro Maeda, Mayato Mitsuzane, Tadashi Ema

    Organic Letters   21 ( 6 )   1853 - 1856   2019.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.orglett.9b00447

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  • Hemisquaramide Tweezers as Organocatalysts: Synthesis of Cyclic Carbonates from Epoxides and CO <inf>2</inf>

    Kazuto Takaishi, Takafumi Okuyama, Shota Kadosaki, Masanobu Uchiyama, Tadashi Ema

    Organic Letters   21 ( 5 )   1397 - 1401   2019.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.orglett.9b00117

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  • Chiroptical and catalytic properties of doubly binaphthyl-strapped chiral porphyrins

    Chihiro Maeda, Kanae Ogawa, Kosuke Sadanaga, Kazuto Takaishi, Tadashi Ema

    Chemical Communications   55 ( 8 )   1064 - 1067   2019

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c8cc09114e

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  • Synthesis of chiral carbazole-based BODIPYs showing circularly polarized luminescence

    Chihiro Maeda, Keiji Nagahata, Kazuto Takaishi, Tadashi Ema

    Chemical Communications   55 ( 21 )   3136 - 3139   2019

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c9cc00894b

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  • Synthesis and electronic properties of π-expanded carbazole-based porphyrins

    Chihiro Maeda, Yumi Tanaka, Takuma Shirakawa, Tadashi Ema

    Chemical Communications   55 ( 68 )   10162 - 10165   2019

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c9cc05079e

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  • Cross-Coupling Approach to an Array of Macrocyclic Receptors Functioning as Chiral Solvating Agents

    Tadashi Ema, Takayuki Yamasaki, Sagiri Watanabe, Mahoko Hiyoshi, Kazuto Takaishi

    Journal of Organic Chemistry   83 ( 18 )   10762 - 10769   2018.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.joc.8b01327

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  • Binaphthyl-Bipyridyl cyclic dyads as a chiroptical switch

    Kazuto Takaishi, Makoto Yasui, Tadashi Ema

    Journal of the American Chemical Society   140 ( 16 )   5334 - 5338   2018.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.8b01860

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  • Calix[4]pyrroles as macrocyclic organocatalysts for the synthesis of cyclic carbonates from epoxides and carbon dioxide

    Chihiro Maeda, Sota Sasaki, Kazuto Takaishi, Tadashi Ema

    Catalysis Science and Technology   8 ( 16 )   4193 - 4198   2018

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    DOI: 10.1039/c8cy00941d

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  • Intense excimer CPL of pyrenes linked to a quaternaphthyl

    Kazuto Takaishi, Ryosuke Takehana, Tadashi Ema

    Chemical Communications   54 ( 12 )   1449 - 1452   2018

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    DOI: 10.1039/c7cc09187g

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  • Palladium Complexes of Carbazole-Based Chalcogenaisophlorins: Synthesis, Structure, and Solid-State NIR Absorption Spectra

    Chihiro Maeda, Kazuto Takaishi, Tadashi Ema

    ChemPlusChem   82 ( 12 )   1368 - 1371   2017.12

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    DOI: 10.1002/cplu.201700430

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  • Spectroscopic Discrimination of Diastereomeric Complexes Involving an Axially Chiral Receptor

    Antonello Filippi, Caterina Fraschetti, Laura Guarcini, Costantino Zazza, Tadashi Ema, Maurizio Speranza

    ChemPhysChem   18 ( 18 )   2475 - 2481   2017.9

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    DOI: 10.1002/cphc.201700732

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  • Chiral Macrocyclic Organocatalysts for Kinetic Resolution of Disubstituted Epoxides with Carbon Dioxide

    Tadashi Ema, Maki Yokoyama, Sagiri Watanabe, Sota Sasaki, Hiromi Ota, Kazuto Takaishi

    Organic Letters   19 ( 15 )   4070 - 4073   2017.8

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    DOI: 10.1021/acs.orglett.7b01838

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  • Helical Oligonaphthodioxepins Showing Intense Circularly Polarized Luminescence (CPL) in Solution and in the Solid State

    Kazuto Takaishi, Takahiro Yamamoto, Sakiko Hinoide, Tadashi Ema

    Chemistry - A European Journal   23 ( 39 )   9249 - 9252   2017.7

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    DOI: 10.1002/chem.201702143

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  • Magnetic Attachment of Lipase Immobilized on Bacteriogenic Iron Oxide Inside a Microtube Reactor for the Kinetic Resolution of Secondary Alcohols

    Kyoko Mandai, Takehiro Fukuda, Yuki Miyazaki, Hideki Hashimoto, Hiroki Mandai, Tadashi Ema, Jun Takada, Seiji Suga

    Synlett   28 ( 7 )   805 - 810   2017.4

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    DOI: 10.1055/s-0036-1589953

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  • Electronic Tuning of Zinc Porphyrin Catalysts for the Conversion of Epoxides and Carbon Dioxide into Cyclic Carbonates

    Chihiro Maeda, Sota Sasaki, Tadashi Ema

    ChemCatChem   9 ( 6 )   946 - 949   2017.3

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    DOI: 10.1002/cctc.201601690

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  • Synthetically useful variants of industrial lipases from: Burkholderia cepacia and Pseudomonas fluorescens

    Kazunori Yoshida, Masakazu Ono, Takahiro Yamamoto, Takashi Utsumi, Satoshi Koikeda, Tadashi Ema

    Organic and Biomolecular Chemistry   15 ( 41 )   8713 - 8719   2017

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    DOI: 10.1039/c7ob01823a

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  • Synthesis of carbazole-based BODIPY dimers showing red fluorescence in the solid state

    Chihiro Maeda, Takumi Todaka, Tomomi Ueda, Tadashi Ema

    Organic and Biomolecular Chemistry   15 ( 44 )   9283 - 9287   2017

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    DOI: 10.1039/c7ob02419c

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  • Carbazole-based BODIPYs with ethynyl substituents at the boron center: Solid-state excimer fluorescence in the VIS/NIR region

    Chihiro Maeda, Keiji Nagahata, Tadashi Ema

    Organic and Biomolecular Chemistry   15 ( 37 )   7783 - 7788   2017

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    DOI: 10.1039/c7ob01473b

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  • Intramolecular Electronic Coupling in the Thiophene-Bridged Carbazole-Based Diporphyrin

    Chihiro Maeda, Mototsugu Takata, Asami Honsho, Tadashi Ema

    Organic Letters   18 ( 23 )   6070 - 6073   2016.12

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    DOI: 10.1021/acs.orglett.6b03054

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  • Solvent-Free Benzoin and Stetter Reactions with a Small Amount of NHC Catalyst in the Liquid or Semisolid State

    Tadashi Ema, Yoshiko Nanjo, Sho Shiratori, Yuta Terao, Ryo Kimura

    Organic Letters   18 ( 21 )   5764 - 5767   2016.11

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    DOI: 10.1021/acs.orglett.6b03115

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  • Theoretical Study on Highly Active Bifunctional Metalloporphyrin Catalysts for the Coupling Reaction of Epoxides with Carbon Dioxide

    Jun ya Hasegawa, Ray Miyazaki, Chihiro Maeda, Tadashi Ema

    Chemical Record   16 ( 5 )   2260 - 2267   2016.10

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    DOI: 10.1002/tcr.201600053

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  • Color-Tunable Solid-State Fluorescence Emission from Carbazole-Based BODIPYs

    Chihiro Maeda, Takumi Todaka, Tomomi Ueda, Tadashi Ema

    Chemistry - A European Journal   22 ( 22 )   7508 - 7513   2016.5

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    DOI: 10.1002/chem.201505150

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  • Highly Active and Robust Metalloporphyrin Catalysts for the Synthesis of Cyclic Carbonates from a Broad Range of Epoxides and Carbon Dioxide

    Chihiro Maeda, Junta Shimonishi, Ray Miyazaki, Jun Ya Hasegawa, Tadashi Ema

    Chemistry - A European Journal   22 ( 19 )   6556 - 6563   2016.5

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    DOI: 10.1002/chem.201600164

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  • Determination of enantiomeric excess of carboxylates by fluorescent macrocyclic sensors

    Ali Akdeniz, Tsuyoshi Minami, Sagiri Watanabe, Maki Yokoyama, Tadashi Ema, Pavel Anzenbacher

    Chemical Science   7 ( 3 )   2016 - 2022   2016.3

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    DOI: 10.1039/c5sc04235f

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  • Carbazole-Based Boron Dipyrromethenes (BODIPYs): Facile Synthesis, Structures, and Fine-Tunable Optical Properties

    Chihiro Maeda, Takumi Todaka, Tadashi Ema

    Organic Letters   17 ( 12 )   3090 - 3093   2015.6

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    DOI: 10.1021/acs.orglett.5b01363

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  • Quaternary ammonium hydroxide as a metal-free and halogen-free catalyst for the synthesis of cyclic carbonates from epoxides and carbon dioxide

    Tadashi Ema, Kazuki Fukuhara, Takashi Sakai, Masaki Ohbo, Fu Quan Bai, Jun Ya Hasegawa

    Catalysis Science and Technology   5 ( 4 )   2314 - 2321   2015.4

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    DOI: 10.1039/c5cy00020c

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  • Bifunctional catalysts based on m-phenylene-bridged porphyrin dimer and trimer platforms: Synthesis of cyclic carbonates from carbon dioxide and epoxides

    Chihiro Maeda, Tomoya Taniguchi, Kanae Ogawa, Tadashi Ema

    Angewandte Chemie - International Edition   54 ( 1 )   134 - 138   2015.1

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    DOI: 10.1002/anie.201409729

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  • Chemical modification of lipase for rational enhancement of enantioselectivity

    Tadashi Ema, Hiroki Inoue

    Chemistry Letters   44 ( 10 )   1374 - 1376   2015

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    DOI: 10.1246/cl.150667

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  • Bifunctional porphyrin catalysts for the synthesis of cyclic carbonates from epoxides and CO <inf>2</inf> : Structural optimization and mechanistic study

    Tadashi Ema, Yuki Miyazaki, Junta Shimonishi, Chihiro Maeda, Jun Ya Hasegawa

    Journal of the American Chemical Society   136 ( 43 )   15270 - 15279   2014.10

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    DOI: 10.1021/ja507665a

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  • Recent progress in catalytic conversions of carbon dioxide

    Chihiro Maeda, Yuki Miyazaki, Tadashi Ema

    Catalysis Science and Technology   4 ( 6 )   1482 - 1497   2014.6

  • Selective anion sensing by chiral macrocyclic receptors with multiple hydrogen-bonding sites

    Tadashi Ema, Keiichi Okuda, Sagiri Watanabe, Takayuki Yamasaki, Tsuyoshi Minami, Nina A. Esipenko, Pavel Anzenbacher

    Organic Letters   16 ( 5 )   1302 - 1305   2014.3

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    DOI: 10.1021/ol403643d

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  • Synergistic effect of quaternary ammonium hydroxide and crown ether on the rapid and clear dissolution of cellulose at room temperature

    Tadashi Ema, Takuzo Komiyama, Satomi Sunami, Takashi Sakai

    RSC Advances   4 ( 5 )   2523 - 2525   2014

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    DOI: 10.1039/c3ra45888a

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  • Multifunctional macrocyclic receptors as templates for aromatic amino acids: A rare example of a highly selective multi-input multi-output chemo-"Logic Gate"

    Caterina Fraschetti, Antonello Filippi, Maria Elisa Crestoni, Tadashi Ema, Maurizio Speranza

    ChemPlusChem   78 ( 9 )   979 - 987   2013.9

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    DOI: 10.1002/cplu.201300086

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  • Robust porphyrin catalysts immobilized on biogenous iron oxide for the repetitive conversions of epoxides and CO<inf>2</inf> into cyclic carbonates

    Tadashi Ema, Yuki Miyazaki, Tomoya Taniguchi, Jun Takada

    Green Chemistry   15 ( 9 )   2485 - 2492   2013.9

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    DOI: 10.1039/c3gc41055b

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  • Unexpected behavior of diastereomeric ions in the GasPhase: A stimulus for pondering on ee measurements by ESI-MS

    Caterina Fraschetti, Antonello Filippi, Maria Elisa Crestoni, Tadashi Ema, Maurizio Speranza

    Journal of the American Society for Mass Spectrometry   24 ( 4 )   573 - 578   2013.4

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    DOI: 10.1007/s13361-012-0575-8

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  • Synthetic macrocyclic receptors in chiral analysis and separation

    Tadashi Ema

    Journal of Inclusion Phenomena and Macrocyclic Chemistry   74 ( 1-4 )   41 - 55   2012.12

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    DOI: 10.1007/s10847-012-0136-6

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  • Construction of contiguous tetrasubstituted carbon stereocenters by intramolecular crossed benzoin reactions catalyzed by N-heterocyclic carbene (NHC) organocatalyst

    Tadashi Ema, Kumiko Akihara, Ryoko Obayashi, Takashi Sakai

    Advanced Synthesis and Catalysis   354 ( 17 )   3283 - 3290   2012.11

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    DOI: 10.1002/adsc.201200499

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  • Redesign of enzyme for improving catalytic activity and enantioselectivity toward poor substrates: Manipulation of the transition state

    Tadashi Ema, Yasuko Nakano, Daiki Yoshida, Shusuke Kamata, Takashi Sakai

    Organic and Biomolecular Chemistry   10 ( 31 )   6299 - 6308   2012.8

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    DOI: 10.1039/c2ob25614b

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  • A bifunctional catalyst for carbon dioxide fixation: Cooperative double activation of epoxides for the synthesis of cyclic carbonates

    Tadashi Ema, Yuki Miyazaki, Shohei Koyama, Yuya Yano, Takashi Sakai

    Chemical Communications   48 ( 37 )   4489 - 4491   2012.4

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    DOI: 10.1039/c2cc30591g

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  • Biogenous iron oxide-immobilized palladium catalyst for the solvent-free Suzuki-Miyaura coupling reaction

    Kyoko Mandai, Toshinobu Korenaga, Tadashi Ema, Takashi Sakai, Mitsuaki Furutani, Hideki Hashimoto, Jun Takada

    Tetrahedron Letters   53 ( 3 )   329 - 332   2012.1

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    DOI: 10.1016/j.tetlet.2011.11.044

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  • Molecular recognition of chiral diporphyrin receptor with a macrocyclic cavity for intercalation of aromatic compounds

    Tadashi Ema, Norichika Ura, Katsuya Eguchi, Takashi Sakai

    Bulletin of the Chemical Society of Japan   85 ( 1 )   101 - 109   2012

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    DOI: 10.1246/bcsj.20110230

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  • Chiral porphyrin dimer with a macrocyclic cavity for intercalation of aromatic guests

    Tadashi Ema, Norichika Ura, Katsuya Eguchi, Yuhei Ise, Takashi Sakai

    Chemical Communications   47 ( 21 )   6090 - 6092   2011.5

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    DOI: 10.1039/c1cc11572c

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  • Highly active lipase immobilized on biogenous iron oxide via an organic bridging group: The dramatic effect of the immobilization support on enzymatic function

    Tadashi Ema, Yuki Miyazaki, Izumi Kozuki, Takashi Sakai, Hideki Hashimoto, Jun Takada

    Green Chemistry   13 ( 11 )   3187 - 3195   2011.1

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    DOI: 10.1039/c1gc15877e

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  • Bifunctional organocatalyst for activation of carbon dioxide and epoxide to produce cyclic carbonate: Betaine as a new catalytic motif

    Yoshihiro Tsutsumi, Kyohei Yamakawa, Masahiko Yoshida, Tadashi Ema, Takashi Sakai

    Organic Letters   12 ( 24 )   5728 - 5731   2010.12

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    DOI: 10.1021/ol102539x

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  • Chemoenzymatic synthesis of optically active alcohol and β-amino-acid derivative containing the difluoromethylene group

    Tadashi Ema, Taro Kadoya, Kumiko Akihara, Takashi Sakai

    Journal of Molecular Catalysis B: Enzymatic   66 ( 1-2 )   198 - 202   2010.9

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    DOI: 10.1016/j.molcatb.2010.05.009

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  • Rational creation of mutant enzyme showing remarkable enhancement of catalytic activity and enantioselectivity toward poor substrates

    Tadashi Ema, Shusuke Kamata, Masahiro Takeda, Yasuko Nakano, Takashi Sakai

    Chemical Communications   46 ( 30 )   5440 - 5442   2010.8

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    DOI: 10.1039/c001561j

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  • Synthesis and evaluation of chiral selectors with multiple hydrogen-bonding sites in the macrocyclic cavities

    Tadashi Ema, Kazuki Hamada, Kyoko Sugita, Yohei Nagata, Takashi Sakai, Atsushi Ohnishi

    Journal of Organic Chemistry   75 ( 13 )   4492 - 4500   2010.7

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    DOI: 10.1021/jo1006587

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  • Chemical modification of biogenous iron oxide to create an excellent enzyme scaffold

    Takashi Sakai, Yuki Miyazaki, Ai Murakami, Noriko Sakamoto, Tadashi Ema, Hideki Hashimoto, Mitsuaki Furutani, Makoto Nakanishi, Tatsuo Fujii, Jun Takada

    Organic and Biomolecular Chemistry   8 ( 2 )   336 - 338   2010

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    DOI: 10.1039/b919497e

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  • Empirical method for predicting enantioselectivity in catalytic reactions: demonstration with lipase and oxazaborolidine

    Tadashi Ema, Norichika Ura, Masataka Yoshii, Toshinobu Korenaga, Takashi Sakai

    Tetrahedron   65 ( 46 )   9583 - 9591   2009.11

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    DOI: 10.1016/j.tet.2009.09.058

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  • Stereoselective synthesis of bicyclic tertiary alcohols with quaternary stereocenters via intramolecular crossed benzoin reactions catalyzed by n-heterocyclic carbenes

    Tadashi Ema, Yoshitaka Oue, Kumiko Akihara, Yuki Miyazaki, Takashi Sakai

    Organic Letters   11 ( 21 )   4866 - 4869   2009.11

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    DOI: 10.1021/ol9019293

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  • Tuning the chiral cavity of macrocyclic receptor for chiral recognition and discrimination

    Tadashi Ema, Daisuke Tanida, Kazuki Hamada, Takashi Sakai

    Journal of Organic Chemistry   73 ( 22 )   9129 - 9132   2008.11

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    DOI: 10.1021/jo801584b

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  • Highly efficient chemoenzymatic synthesis of methyl (R)-o-chloromandelate, a key intermediate for clopidogrel, via asymmetric reduction with recombinant Escherichia coli

    Tadashi Ema, Sayaka Ide, Nobuyasu Okita, Takashi Sakai

    Advanced Synthesis and Catalysis   350 ( 13 )   2039 - 2044   2008.9

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    DOI: 10.1002/adsc.200800292

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  • Lipase-catalyzed dynamic kinetic resolution giving optically active cyanohydrins: use of silica-supported ammonium hydroxide and porous ceramic-immobilized lipase

    Takashi Sakai, Kefei Wang, Tadashi Ema

    Tetrahedron   64 ( 9 )   2178 - 2183   2008.2

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    DOI: 10.1016/j.tet.2007.12.030

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  • Hydrolase-catalyzed kinetic resolution of 5-[4-(1-hydroxyethyl)phenyl]-10, 15,20-tris(pentafluorophenyl)porphyrin in ionic liquids

    Tadashi Ema, Tokuhiro Doi, Takashi Sakai

    Chemistry Letters   37 ( 1 )   90 - 91   2008.1

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    DOI: 10.1246/cl.2008.90

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  • Chiral selector with multiple hydrogen-bonding sites in a macrocyclic cavity

    Tadashi Ema, Daisuke Tanida, Kyoko Sugita, Takashi Sakai, Ken Ichiro Miyazawa, Atsushi Ohnishi

    Organic Letters   10 ( 12 )   2365 - 2368   2008

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    DOI: 10.1021/ol800940j

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  • Biomimetic trifunctional organocatalyst showing a great acceleration for the transesterification between vinyl ester and alcohol

    Tadashi Ema, Daisuke Tanida, Tatsuya Matsukawa, Takashi Sakai

    Chemical Communications   ( 8 )   957 - 959   2008

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    DOI: 10.1039/b718763g

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  • Highly active and robust organic-inorganic hybrid catalyst for the synthesis of cyclic carbonates from carbon dioxide and epoxides

    Takashi Sakai, Yoshihiro Tsutsumi, Tadashi Ema

    Green Chemistry   10 ( 3 )   345 - 349   2008

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    DOI: 10.1039/b718321f

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  • Versatile and practical macrocyclic reagent with multiple hydrogen-bonding sites for chiral discrimination in NMR

    Tadashi Ema, Daisuke Tanida, Takashi Sakai

    Journal of the American Chemical Society   129 ( 34 )   10591 - 10596   2007.8

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    DOI: 10.1021/ja073476s

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  • Highly enantioselective and efficient synthesis of methyl (R)-o-chloromandelate with recombinant E. coli: Toward practical and green access to clopidogrel

    Tadashi Ema, Nobuyasu Okita, Sayaka Ide, Takashi Sakai

    Organic and Biomolecular Chemistry   5 ( 8 )   1175 - 1176   2007

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    DOI: 10.1039/b703463f

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  • Versatile and practical chiral shift reagent with hydrogen-bond donor/acceptor sites in a macrocyclic cavity

    Tadashi Ema, Daisuke Tanida, Takashi Sakai

    Organic Letters   8 ( 17 )   3773 - 3775   2006.8

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    DOI: 10.1021/ol0613665

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  • Asymmetric reduction of ketones using recombinant E. coli cells that produce a versatile carbonyl reductase with high enantioselectivity and broad substrate specificity

    Tadashi Ema, Hideo Yagasaki, Nobuyasu Okita, Masahiro Takeda, Takashi Sakai

    Tetrahedron   62 ( 26 )   6143 - 6149   2006.6

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    DOI: 10.1016/j.tet.2006.04.061

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  • Synthesis of molecular tweezers bearing pentafluorophenyl and several pendant aryl groups. Effective application of the modified Suzuki-Miyaura coupling reaction

    Toshinobu Korenaga, Takahiro Kosaki, Yusuke Kawauchi, Tadashi Ema, Takashi Sakai

    Journal of Fluorine Chemistry   127 ( 4-5 SPEC. ISS. )   604 - 609   2006.5

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    DOI: 10.1016/j.jfluchem.2005.12.007

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  • Suzuki-Miyaura coupling reaction using pentafluorophenylboronic acid

    Toshinobu Korenaga, Takahiro Kosaki, Rokki Fukumura, Tadashi Ema, Takashi Sakai

    Organic Letters   7 ( 22 )   4915 - 4917   2005.10

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    DOI: 10.1021/ol051866i

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  • Rational control of enantioselectivity of lipase by site-directed mutagenesis based on the mechanism

    Tadashi Ema, Toshiyuki Fujii, Misa Ozaki, Toshinobu Korenaga, Takashi Sakai

    Chemical Communications   ( 37 )   4650 - 4651   2005.10

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    DOI: 10.1039/b508244g

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  • Highly sensitive chiral shift reagent bearing two zinc porphyrins

    Tadashi Ema, Nozomi Ouchi, Tokuhiro Doi, Toshinobu Korenaga, Takashi Sakai

    Organic Letters   7 ( 18 )   3985 - 3988   2005.9

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    DOI: 10.1021/ol0514808

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  • Kinetic resolution of 5-(hydroxymethyl)-3-phenyl-2-isoxazoline by using the 'low-temperature method' with porous ceramic-immobilized lipase

    Takashi Sakai, Hiroshi Mitsutomi, Toshinobu Korenaga, Tadashi Ema

    Tetrahedron Asymmetry   16 ( 8 )   1535 - 1539   2005.4

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    DOI: 10.1016/j.tetasy.2005.02.025

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  • Asymmetric reduction of a variety of ketones with a recombinant carbonyl reductase: Identification of the gene encoding a versatile biocatalyst

    Tadashi Ema, Hideo Yagasaki, Nobuyasu Okita, Kumiko Nishikawa, Toshinobu Korenaga, Takashi Sakai

    Tetrahedron Asymmetry   16 ( 6 )   1075 - 1078   2005.3

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    DOI: 10.1016/j.tetasy.2005.02.004

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  • Lipase-catalyzed resolution of (2R*,3S*)- and (2R*,3R*)-3-methyl-3-phenyl-2-aziridinemethanol at low temperatures and determination of the absolute configurations of the four stereoisomers

    Takashi Sakai, Yu Liu, Hiroshi Ohta, Toshinobu Korenaga, Tadashi Ema

    Journal of Organic Chemistry   70 ( 4 )   1369 - 1375   2005.2

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    DOI: 10.1021/jo048243n

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  • Synthesis of a molecular tweezer containing pentafluorophenyl groups and investigation of the π-π stacking interaction for a pentafluorophenyl group in a polar organic solvent

    Toshinobu Korenaga, Yusuke Kawauchi, Takahiro Kosaki, Tadashi Ema, Takashi Sakai

    Bulletin of the Chemical Society of Japan   78 ( 12 )   2175 - 2179   2005

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    DOI: 10.1246/bcsj.78.2175

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  • Reestimation of the Taft's substituent constant of the pentafluorophenyl group

    Toshinobu Korenaga, Koichi Kadowaki, Tadashi Ema, Takashi Sakai

    Journal of Organic Chemistry   69 ( 21 )   7340 - 7343   2004.10

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    DOI: 10.1021/jo048939g

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  • Rational strategies for highly enantioselective lipase-catalyzed kinetic resolutions of very bulky chiral compounds: Substrate design and high-temperature biocatalysis

    Tadashi Ema

    Tetrahedron Asymmetry   15 ( 18 )   2765 - 2770   2004.9

  • Mechanism of enantioselectivity of lipases and other synthetically useful hydrolases

    Tadashi Ema

    Current Organic Chemistry   8 ( 11 )   1009 - 1025   2004.7

  • The effect of temperature on the lipase-catalyzed asymmetric protonation of 1-acetoxy-2-methylcyclohexene giving (R)-2-methylcyclohexanone

    Takashi Sakai, Akiko Matsuda, Yuko Tanaka, Toshinobu Korenaga, Tadashi Ema

    Tetrahedron Asymmetry   15 ( 12 )   1929 - 1932   2004.6

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    DOI: 10.1016/j.tetasy.2004.05.008

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  • Synthesis of enantiomerically pure (R,R)- and (S,S)-1,2-Bis(pentafluorophenyl)ethane-1,2-diamine and evaluation of the pK <inf>a</inf> value by ab initio calculations

    Takashi Sakai, Toshinobu Korenaga, Noriyuki Washio, Yuji Nishio, Shinichi Minami, Tadashi Ema

    Bulletin of the Chemical Society of Japan   77 ( 5 )   1001 - 1008   2004

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    DOI: 10.1246/bcsj.77.1001

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  • Highly enantioselective lipase-catalyzed reactions at high temperatures up to 120°C in organic solvent

    Tadashi Ema, Masafumi Kageyama, Toshinobu Korenaga, Takashi Sakai

    Tetrahedron Asymmetry   14 ( 24 )   3943 - 3947   2003.12

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    DOI: 10.1016/j.tetasy.2003.09.040

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  • Intermolecular oxygen atom⋯π interaction in the crystal packing of chiral amino alcohol bearing a pentafluorophenyl group

    Toshinobu Korenaga, Hikaru Tanaka, Tadashi Ema, Takashi Sakai

    Journal of Fluorine Chemistry   122 ( 2 )   201 - 205   2003.8

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    DOI: 10.1016/S0022-1139(03)00089-7

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  • Enhancement of the efficiency of the low temperature method for kinetic resolution of primary alcohols by optimizing the organic bridges in porous ceramic-immobilized lipase

    Takashi Sakai, Kyoko Hayashi, Fumika Yano, Mie Takami, Megumi Ino, Toshinobu Korenaga, Tadashi Ema

    Bulletin of the Chemical Society of Japan   76 ( 7 )   1441 - 1446   2003.7

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    DOI: 10.1246/bcsj.76.1441

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  • Transition-state models are useful for versatile biocatalysts: Kinetics and thermodynamics of enantioselective acylations of secondary alcohols catalyzed by lipase and subtilisin

    Tadashi Ema, Kunihiro Yamaguchi, Yuji Wakasa, Akinori Yabe, Ryoichi Okada, Minoru Fukumoto, Fumika Yano, Toshinobu Korenaga, Masanori Utaka, Takashi Sakai

    Journal of Molecular Catalysis B: Enzymatic   22 ( 3-4 )   181 - 192   2003.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S1381-1177(03)00034-1

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  • Practical resolution of 3-phenyl-2H-azirine-2-methanol at very low temperature by using lipase immobilized on porous ceramic and optimized acylating agent

    Takashi Sakai, Akiko Matsuda, Toshinobu Korenaga, Tadashi Ema

    Bulletin of the Chemical Society of Japan   76 ( 9 )   1819 - 1821   2003

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1246/bcsj.76.1819

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  • Mechanism-based enzymatic method for reliable determination of absolute configuration of chiral 1-substituted ethanols: Combination with NMR method

    Tadashi Ema, Masataka Yoshii, Toshinobu Korenaga, Takashi Sakai

    Tetrahedron Asymmetry   13 ( 11 )   1223 - 1229   2002.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0957-4166(02)00318-X

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  • 5-[4-(1-Hydroxyethyl)phenyl]-10,15,20-triphenylporphyrin as a probe of the transition-state conformation in hydrolase-catalyzed enantioselective transesterifications

    Tadashi Ema, Masahito Jittani, Kenji Furuie, Masanori Utaka, Takashi Sakai

    Journal of Organic Chemistry   67 ( 7 )   2144 - 2151   2002.4

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    DOI: 10.1021/jo0109063

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  • High enantioselectivity and broad substrate specificity of a carbonyl reductase: Toward a versatile biocatalyst

    T. Ema, H. Moriya, T. Kofukuda, T. Ishida, K. Maehara, M. Utaka, T. Sakai

    Journal of Organic Chemistry   66 ( 25 )   8682 - 8684   2001.12

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    DOI: 10.1021/jo0108257

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  • Lipase-catalyzed transesterification of 2-hydroxy-2- (pentafluorophenyl)acetonitrile leading to (1R,2R)-and (1S,2S)-bis (pentafluorophenyl)ethane-1,2-diol

    Takashi Sakai, Yasushi Miki, Masashi Tsuboi, Hiroaki Takeuchi, Tadashi Ema, Kenji Uneyama, Masanori Utaka

    Journal of Organic Chemistry   65 ( 9 )   2740 - 2747   2000.5

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    DOI: 10.1021/jo9918551

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  • Compensation effect between differential activation enthalpy and entropy in subtilisin-catalyzed kinetic resolutions of secondary alcohols

    Tadashi Ema, Kunihiro Yamaguchi, Yuji Wakasa, Nobuaki Tanaka, Masanori Utaka, Takashi Sakai

    Chemistry Letters   ( 7 )   782 - 783   2000

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1246/cl.2000.782

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  • Transition-state model for subtilisin-catalyzed transesterifications of secondary alcohols

    Ema Tadashi, Ryoichi Okada, Minoru Fukumoto, Masahito Jittani, Mikiko Ishida, Kenji Furuie, Kunihiro Yamaguchi, Takashi Sakai, Masanori Utaka

    Tetrahedron Letters   40 ( 23 )   4367 - 4370   1999.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0040-4039(99)00750-9

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  • Low-temperature method for enhancement of enantioselectivity in the lipase-catalyzed kinetic resolutions of solketal and some chiral alcohols

    Takashi Sakai, Tetsuo Kishimoto, Yukie Tanaka, Tadashi Ema, Masanori Utaka

    Tetrahedron Letters   39 ( 43 )   7881 - 7884   1998.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0040-4039(98)01747-X

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  • Lipase-catalyzed kinetic resolution of large secondary alcohols having tetraphenylporphyrin

    Tadashi Ema, Masahito Jittani, Takashi Sakai, Masanori Utaka

    Tetrahedron Letters   39 ( 35 )   6311 - 6314   1998.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0040-4039(98)01338-0

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  • Control of enantioselectivity in the baker's yeast asymmetric reduction of γ-chloro β-diketones to γ-chloro (S)-β-hydroxy ketones

    Jing Nan Cui, Tadashi Ema, Takashi Sakai, Masanori Utaka

    Tetrahedron Asymmetry   9 ( 15 )   2681 - 2692   1998.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0957-4166(98)00269-9

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  • Highly Enantioselective Reduction of Carbonyl Compounds Using a Reductase Purified from Bakers' Yeast

    Tadashi Ema, Yasushi Sugiyama, Minoru Fukumoto, Hiroyuki Moriya, Jing Nan Cui, Takashi Sakai, Masanori Utaka

    Journal of Organic Chemistry   63 ( 15 )   4996 - 5000   1998.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jo980165e

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  • Lipase-catalyzed kinetic resolution of 2-acyloxy-2- (pentafluorophenyl)acetonitrile

    Takashi Sakai, Yasushi Miki, Mayumi Nakatani, Tadashi Ema, Kenji Uneyama, Masanori Utaka

    Tetrahedron Letters   39 ( 29 )   5233 - 5236   1998.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0040-4039(98)01029-6

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  • Origin of the Enantioselectivity of Lipases Explained by a Stereo-Sensing Mechanism Operative at the Transition State

    Tadashi Ema, Juka Kobayashi, Soichi Maeno, Takashi Sakai, Masanori Utaka

    Bulletin of the Chemical Society of Japan   71 ( 2 )   443 - 453   1998.2

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    DOI: 10.1246/bcsj.71.443

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  • Enhancement of the Enantioselectivity in Lipase-Catalyzed Kinetic Resolutions of 3-Phenyl-2H-azirine-2-methanol by Lowering the Temperature to -40°C

    Takashi Sakai, Isamu Kawabata, Tetsuo Kishimoto, Tadashi Ema, Masanori Utaka

    Journal of Organic Chemistry   62 ( 15 )   4906 - 4907   1997.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jo970581j

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  • Highly regio- and enantioselective reduction of 1-chloro-2,4-alkanediones using baker's yeast: Effects of organic solvents as additives

    Jing Nan Cui, Ryoji Teraoka, Tadashi Ema, Takashi Sakai, Masanori Utaka

    Tetrahedron Letters   38 ( 17 )   3021 - 3024   1997.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0040-4039(97)00524-8

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  • Lipase-catalyzed efficient kinetic resolution of 3-Hydroxy-3-(pentafluorophenyl)propionitrile

    Takashi Sakal, Tetsuo Takayama, Takafumi Ohkawa, Osamu Yoshio, Tadashi Ema, Masanori Utaka

    Tetrahedron Letters   38 ( 11 )   1987 - 1990   1997.3

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    DOI: 10.1016/S0040-4039(97)00255-4

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  • New optically active diporphyrin having a chiral cyclophane as a spacer

    Tadashi Ema, Shigeharu Misawa, Shuichi Nemugaki, Takashi Sakai, Masanori Utaka

    Chemistry Letters   ( 6 )   487 - 488   1997

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    DOI: 10.1246/cl.1997.487

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  • Kinetic resolution of racemic 2-substituted 3-cyclopenten-1-ols by lipase-catalyzed transesterifications: A rational strategy to improve enantioselectivity

    Tadashi Ema, Soichi Maeno, Yusuke Takaya, Takashi Sakai, Masanori Utaka

    Journal of Organic Chemistry   61 ( 24 )   8610 - 8616   1996.11

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    DOI: 10.1021/jo961144s

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  • Significant effect of acyl groups on enantioselectivity in lipase-catalyzed transesterifications

    Tadashi Ema, Soichi Maeno, Yusuke Takaya, Takashi Sakai, Masanori Utaka

    Tetrahedron Asymmetry   7 ( 3 )   625 - 628   1996.3

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    DOI: 10.1016/0957-4166(96)00049-3

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  • Highly efficient and convenient regeneration of NADPH for asymmetric reduction using bakers' yeast cell free extract

    Masanori Utaka, Tomoko Yano, Ema Tadashi, Takashi Sakai

    Chemistry Letters   ( 12 )   1079 - 1080   1996

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    DOI: 10.1246/cl.1996.1079

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  • Unusual picosecond 1(π, π*) deactivation of ruffled nonplanar porphyrins

    Steve Gentemann, Craig J. Medforth, Tadashi Ema, Nora Y. Nelson, Kevin M. Smith, Jack Fajer, Dewey Holten

    Chemical Physics Letters   245 ( 4-5 )   441 - 447   1995.11

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    DOI: 10.1016/0009-2614(95)01030-D

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  • Molecular recognition: New chiral metalloporphyrins as receptor models

    Hisanobu Ogoshi, Tadashi Ema, Yusuke Kato, Tadashi Mizutani, Yasuhisa Kuroda

    Supramolecular Chemistry   6 ( 1-2 )   115 - 124   1995.10

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    DOI: 10.1080/10610279508032527

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  • Synthesis and CD spectrum of chiral porphyrin dimer

    Tadashi Ema, Shuichi Nemugaki, Sadao Tsuboi, Masanori Utaka

    Tetrahedron Letters   36 ( 33 )   5905 - 5908   1995.8

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    DOI: 10.1016/00404-0399(50)11388-

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  • Restricted internal rotation of amino acid esters. Quantitative evaluation of rigidity of a molecule in terms of internal rotation entropy

    Tadashi Mizutani, Tadashi Ema, Hisanobu Ogoshi

    Tetrahedron   51 ( 2 )   473 - 484   1995.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/0040-4020(94)00909-E

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  • Crystal structure of a remarkably ruffled nonplanar porphyrin (pyridine)[5,10,15,20-tetra(tert-butyl)porphyrinato]zinc(II)

    Mathias O. Senge, Tadashi Ema, Kevin M. Smith

    Journal of the Chemical Society, Chemical Communications   ( 7 )   733 - 734   1995

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    DOI: 10.1039/C39950000733

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  • Ruffling in a Series of Nickel(II) meso-Tetrasubstituted Porphyrins as a Model for the Conserved Ruffling of the Heme of Cytochromes c

    W. Jentzen, M. C. Simpson, J. D. Hobbs, X. Song, J. A. Shelnutt, T. Ema, N. Y. Nelson, C. J. Medforth, K. M. Smith, M. Veyrat, M. Mazzanti, R. Ramasseul, J. C. Marchon, T. Takeuchi, W. A. Goddard

    Journal of the American Chemical Society   117 ( 45 )   11085 - 11097   1995

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    DOI: 10.1021/ja00150a008

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  • Complexation-induced Catalysis in Zinc Insertion into Cationic Porphyrin Reviewed

    Mizutani, T, Koyama, H, Ema, T, Nomura, A, Yoshida, T, Ogoshi, H

    Chem. Lett.   ( 10 )   941 - 942   1995

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  • 5,10,15,20‐Tetra‐tert‐butylporphyrin and Its Remarkable Reactivity in the 5‐ and 15‐Positions

    Tadashi Ema, Mathias O. Senge, Nora Y. Nelson, Hisanobu Ogoshi, Kevin M. Smith

    Angewandte Chemie International Edition in English   33 ( 18 )   1879 - 1881   1994.9

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    DOI: 10.1002/anie.199418791

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  • Mechanism of Induced Circular Dichroism of Amino Acid Ester-Porphyrin Supramolecular Systems. Implications to the Origin of the Circular Dichroism of Hemoprotein

    Tadashi Mizutani, Tadashi Ema, Takashi Yoshida, Thomas Renné, Hisanobu Ogoshi

    Inorganic Chemistry   33 ( 16 )   3558 - 3566   1994.8

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    DOI: 10.1021/ic00094a020

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  • Design and Synthesis of a Trifunctional Chiral Porphyrin with C<inf>2</inf> Symmetry as a Chiral Recognition Host for Amino Acid Esters

    Tadashi Mizutani, Tadashi Ema, Takashi Tomita, Yasuhisa Kuroda, Hisanobu Ogoshi

    Journal of the American Chemical Society   116 ( 10 )   4240 - 4250   1994.5

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    DOI: 10.1021/ja00089a013

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  • Recognition of α-Amino Acid Esters by Zinc Porphyrin Derivatives via Coordination and Hydrogen Bonding Interactions. Evidence for Two-Point Fixation from Thermodynamic and Induced Circular Dichroism Spectroscopic Studies

    Tadashi Mizutani, Tadashi Ema, Takashi Yoshida, Yasuhisa Kuroda, Hisanobu Ogoshi

    Inorganic Chemistry   32 ( 10 )   2072 - 2077   1993

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/ic00062a032

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  • Recognition of chirality and residual groups of amino acid esters using new trifunctional chiral porphyrins with C<inf>2</inf> symmetry

    Tadashi Mizutani, Tadashi Ema, Takashi Tomita, Yasuhisa Kuroda, Hisanobu Ogoshi

    Journal of the Chemical Society, Chemical Communications   ( 6 )   520 - 522   1993

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    DOI: 10.1039/C39930000520

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  • Synthesis and Photoreaction of 1,2,3,4-Tetra-t-butylnaphthalene: A Highly Crowded Naphthalene Derivative and Its Valenceisomers

    Sadao Miki, Tadashi Ema, Rie Shimizu, Hiroshi Nakatsuji, Zen ichi Yoshida

    Tetrahedron Letters   33 ( 12 )   1619 - 1620   1992.3

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    DOI: 10.1016/S0040-4039(00)91689-7

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  • Selective syntheses of unsymmetrical meso-arylporphyrins

    Tadashi Ema, Yasuhisa Kuroda, Hisanobu Ogoshi

    Tetrahedron Letters   32 ( 35 )   4529 - 4532   1991

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/0040-4039(91)80031-Z

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Books

  • Chiral Luminescence: From Molecules to Materials and Devices

    Takaishi, K, Ema, T( Role: Contributor ,  Evolving Fluorophores into Circularly Polarized Luminophores with Chiral Naphthalene Dimers;Tetramers)

    Wiley  2024 

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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 ,  二官能性ポルフィリン金属錯体触媒の開発−15年を経て恩師直伝の知恵を使う)

    化学同人  2023.7  ( ISBN:9784759823363

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    Total pages:xiv, 206p   Language:Japanese

    CiNii Books

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  • Practical Methods for Biocatalysis and Biotransformations 3

    Wiley  2016 

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  • 有機合成実験法ハンドブック(第2版)

    有機合成化学協会  2015 

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  • Practical Methods for Biocatalysis and Biotransformations

    Wiley  2010 

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  • 酵素利用技術大系:基礎・解析から改変・高機能化・産業利用まで

    エヌ・ティー・エス  2010 

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  • 超分子サイエンス〜基礎から材料への展開〜

    エヌ・ティー・エス  2009 

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Awards

  • 日本化学会 学術賞

    2022  

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  • 長瀬科学技術振興財団 長瀬研究振興賞

    2021  

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  • 八雲環境科学振興財団 八雲賞

    2020  

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  • 有機合成化学協会 企業冠賞「東ソー・環境エネルギー賞」

    2020  

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  • 科研費審査委員表彰

    2017  

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    Country:Japan

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  • 岡山工学振興会 内山勇三科学技術賞

    2012  

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    Country:Japan

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  • 岡山リサーチパーク研究・展示発表会 産学官連携推進賞

    2011  

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  • HGCS Japan Award of Excellence 2011

    2011  

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    Country:Japan

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  • 岡山工学振興会 科学技術賞

    2008  

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    Country:Japan

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  • 日本化学会第85春季年会「若い世代の特別講演会」講演証

    2005  

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    Country:Japan

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  • 日本化学会生体機能関連化学部会(18回)・バイオテクノロジー部会(7回)合同シンポジウム 部会講演賞

    2003  

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  • 有機合成化学協会中国四国支部 奨励賞

    1999  

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  • Seminar on Applied Chemistry 1 (2023academic year) Prophase  - その他

  • Seminar on Applied Chemistry 2 (2023academic year) Late  - その他

  • Research Works for Master Thesis on Applied Chemistry (2023academic year) Year-round  - その他

  • Seminar in Advanced Chemistry (2023academic year) Other  - その他

  • Practice for Presenting in Japanese and English (2023academic year) Year-round  - 金3~4

  • Practice for Presenting in Japanese and English (2023academic year) Year-round  - [前期]金3~4, [後期]その他

  • Organic Chemistry 1A (2023academic year) 1st semester  - 月1~2

  • Organic Chemistry 1B (2023academic year) 1st semester  - 木3~4

  • Organic Chemistry Ⅱ (2023academic year) 1st semester  - 月1,木3

  • Organic Chemistry Ⅲ (2023academic year) 1st semester  - 月2,木4

  • Fundamental Organic Chemistry 1 (2023academic year) 1st semester  - 金3~4

  • Fundamental Organic Chemistry 2 (2023academic year) Second semester  - 金3~4

  • Organic Chemistry 1 (2023academic year) 1st and 2nd semester  - 金3~4

  • Organic Chemistry 2 (2023academic year) 1st semester  - 月1~2,木3~4

  • Organic Chemistry I (2023academic year) Second semester  - 金3~4

  • The Logic for Organic Synthesis (2023academic year) Late  - その他

  • The Logic for Organic Synthesis (2023academic year) Late  - その他

  • Advanced Synthetic Chemistry 2 (2023academic year) Summer concentration  - その他

  • Advanced Study (2023academic year) Other  - その他

  • Biofunctional Organic Chemistry (2023academic year) Late  - その他

  • Bioorganic Chemistry (2023academic year) Late  - その他

  • Stereochemistry (2023academic year) Fourth semester  - 金3~4

  • Introduction to Chemistry and Bioengineering (2022academic year) 1st semester  - その他

  • English for Chemistry and Biotechnology (2022academic year) 1st and 2nd semester  - 水3~4

  • English for Chemistry and Biotechnology 1 (2022academic year) 1st semester  - 水3~4

  • English for Chemistry and Biotechnology 2 (2022academic year) Second semester  - 水3~4

  • Topics in Synthetic Chemistry 2 (2022academic year) Summer concentration  - その他

  • Topics in Synthetic Chemistry 4 (2022academic year) Summer concentration  - その他

  • Topics in Synthetic Chemistry 1 (2022academic year) 1st semester  - 金3~4

  • Topics in Synthetic Chemistry 2 (2022academic year) Second semester  - 金3~4

  • Seminar in Synthetic Organic Chemistry (2022academic year) Year-round  - その他

  • Fundamentals of Organic Chemistry (2022academic year) 1st semester  - 金3~4

  • Internship in Applied Chemistry (2022academic year) Prophase  - その他

  • English Engineering (2022academic year) 3rd and 4th semester  - 木3~4

  • English Engineering 1 (2022academic year) Third semester  - 木3~4

  • English Engineering 2 (2022academic year) Fourth semester  - 木3~4

  • Introduction to Industry (2022academic year) 3rd and 4th semester  - 木1~2

  • Introduction to Industry (2022academic year) 3rd and 4th semester  - 木1~2

  • Seminar on Applied Chemistry 1 (2022academic year) Prophase  - その他

  • Seminar on Applied Chemistry 2 (2022academic year) Late  - その他

  • Basic Applied Chemistry (2022academic year) Late  - 月3~4,火3~4

  • Research Works for Master Thesis on Applied Chemistry (2022academic year) Year-round  - その他

  • 日英実践技術表現法 (2022academic year) 前期  - 金3,金4

  • Organic Chemistry 1A (2022academic year) 1st semester  - 月1~2

  • Organic Chemistry 1B (2022academic year) 1st semester  - 木3~4

  • Organic Chemistry Ⅱ (2022academic year) 1st semester  - 月1,木3

  • Organic Chemistry Ⅲ (2022academic year) 1st semester  - 月2,木4

  • Organic Chemistry and its Exercises 1 (2022academic year) 1st semester  - 月1~2,木3~4

  • Fundamental Organic Chemistry (2022academic year) 1st and 2nd semester  - 金3~4

  • Fundamental Organic Chemistry 1 (2022academic year) 1st semester  - 金3~4

  • Fundamental Organic Chemistry 2 (2022academic year) Second semester  - 金3~4

  • Organic Chemistry 1 (2022academic year) 1st semester  - 月1~2,木3~4

  • Organic Chemistry 1 (2022academic year) 1st and 2nd semester  - 金3~4

  • Organic Chemistry 2 (2022academic year) 1st semester  - 月1~2,木3~4

  • Organic Chemistry I (2022academic year) Second semester  - 金3~4

  • Functional Molecular Chemistry (2022academic year) Second semester  - 木5~7

  • Functional Molecular Chemistry (2022academic year) Second semester  - 木5~7

  • The Logic for Organic Synthesis (2022academic year) Late  - その他

  • Advanced Synthetic Chemistry 6 (2022academic year) Summer concentration  - その他

  • Biofunctional Organic Chemistry (2022academic year) Late  - 木1,木2

  • Stereochemistry (2022academic year) Fourth semester  - 火3~4

  • Stereochemistry (2022academic year) Fourth semester  - 火3~4

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