論文 - 依馬 正
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Terpolymerization of Oxetane, CO2, and Isothiocyanates with Bifunctional Catalysts: Synthesis and Degradability of Poly(thioimidocarbonate-trimethylene carbonate)s 査読
Io Yamamoto, Satoshi Muranaka, Keiichi Hirose, Tadashi Ema
ACS Applied Polymer Materials 7 ( 8 ) 5116 - 5126 2025年4月
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Deoxygenative dual CO2 conversions: methylenation and switchable N-formylation/N-methylation of tryptamines 査読
Kazuto Takaishi, Hajime Morishita, Kosuke Iwaki, Tadashi Ema
Green Chemistry 27 ( 18 ) 5359 - 5365 2025年4月
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A Binaphthyl Macrocycle Exhibiting Circularly Polarized Luminescence: On–off Switch Triggered by Molecular Recognition 査読
Kazuto Takaishi, Itsuki Taniuchi, Sho Miyashita, Kei Yabushita, Tadashi Ema
Chemistry – A European Journal 31 ( 24 ) e202500736 2025年3月
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Synthesis and Postfunctionalization of Acrylate-Appended Poly(cyclohexene carbonate)s: Modulation of Properties of CO<inf>2</inf>-Based Polymers 査読
Chihiro Maeda, Hina Inoue, Tadashi Ema
Macromolecules 58 ( 3 ) 1571 - 1577 2025年2月
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Recent development of azahelicenes showing circularly polarized luminescence 招待 査読
Chihiro Maeda, Tadashi Ema
Chemical Communications 61 ( 25 ) 4757 - 4773 2025年2月
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Selective and Divergent Synthesis of Naphthalene- and Phenanthrene-Fused Azahelicenes by Turning Rearrangement On or Off 査読
Chihiro Maeda, Sayaka Michishita, Tadashi Ema
Chemistry - A European Journal 31 ( 16 ) e202404325 2025年1月
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B,N-Embedded Helical Nanographenes Showing an Ion-Triggered Chiroptical Switching Function 査読
Chihiro Maeda, Sayaka Michishita, Issa Yasutomo, Tadashi Ema
Angewandte Chemie - International Edition 2025年1月
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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 招待 査読
Koichi Nakaoka, Tadashi Ema
Chemical Communications 61 ( 1 ) 46 - 60 2025年1月
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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 査読
Satoshi Muranaka, Io Yamamoto, Tadashi Ema
ACS Applied Polymer Materials 6 ( 24 ) 15366 - 15374 2024年12月
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Cyclic Azahelicene Dimers Showing Bright Circularly Polarized Luminescence and Selective Fluoride Recognition 査読
Chihiro Maeda, Issa Yasutomo, Tadashi Ema
Angewandte Chemie - International Edition 63 ( 30 ) e202404149 2024年7月
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Temperature-Induced Sign Inversion of Circularly Polarized Luminescence of Binaphthyl-Bridged Tetrathiapyrenophanes 査読
Kazuto Takaishi, Fumiya Yoshinami, Yoshihiro Sato, Tadashi Ema
Chemistry - A European Journal 30 ( 32 ) e202400866 2024年6月
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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 査読
Sha Li, Shoko Nakahara, Taishin Adachi, Takumi Murata, Kazuto Takaishi, Tadashi Ema
Journal of the American Chemical Society 146 ( 22 ) 14935 - 14941 2024年6月
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Synthesis of hydroxy acids via the light-driven carboxylation of epoxides with CO<inf>2</inf> 査読
Chihiro Maeda, Ren Kumemoto, Rio Tanaka, Tadashi Ema
Chemistry Letters 53 ( 5 ) upae086 2024年5月
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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 査読
Koichi Nakaoka, Satoshi Muranaka, Io Yamamoto, Tadashi Ema
Polymer Chemistry 15 ( 8 ) 707 - 713 2024年1月
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Selective Conversions of CO<inf>2</inf> into Value-Added Chemicals via Cooperative Catalysis Using Multifunctional Catalysts 査読
Tadashi Ema
Bulletin of the Chemical Society of Japan 96 ( 7 ) 693 - 701 2023年7月
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Synthesis and Photophysical Properties of Dihetero[8]circulenes 査読
Chihiro Maeda, Koki Akiyama, Tadashi Ema
Organic Letters 25 ( 21 ) 3932 - 3935 2023年6月
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One‐Pot Synthesis of Aldehydes or Alcohols from CO 2 via Formamides or Silyl Formates 査読
Fan Yang, Yuta Saiki, Koichi Nakaoka, Tadashi Ema
Advanced Synthesis & Catalysis 365 ( 6 ) 877 - 883 2023年3月
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One-Pot Synthesis of Dihydropyrans via CO2 Reduction and Domino Knoevenagel/oxa-Diels–Alder Reactions 査読
Kazuto Takaishi, Ritsuki Nishimura, Yuha Toda, Hajime Morishita, Tadashi Ema
Organic Letters 25 ( 9 ) 1370 - 1374 2023年3月
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Circularly polarized luminescence from porphyrin-containing (supra)molecular systems 招待 査読
Chihiro Maeda, Issa Yasutomo, Kazuto Takaishi, Tadashi Ema
Journal of Porphyrins and Phthalocyanines 27 ( 07n10 ) 903 - 911 2023年2月
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Circularly polarized luminescence in molecular recognition systems: Recent achievements 招待 査読
Kazuto Takaishi, Chihiro Maeda, Tadashi Ema
Chirality 35 ( 2 ) 92 - 103 2023年2月
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Cu-catalyzed carboxylation of organoboronic acid pinacol esters with CO2 査読
Chihiro Maeda, Takumi Cho, Ren Kumemoto, Tadashi Ema
Organic & Biomolecular Chemistry 21 ( 32 ) 6565 - 6571 2023年
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Catalytic synthesis and physical properties of CO2-based cross-linked poly(cyclohexene carbonate)s 査読
Chihiro Maeda, Kenta Kawabata, Kaito Niki, Yuma Sako, Takumi Okihara, Tadashi Ema
Polymer Chemistry 14 ( 37 ) 4338 - 4343 2023年
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Nakaoka, K., Guo, C., Saiki, Y., Furukawa, S., Ema, T.
Journal of Organic Chemistry 88 ( 21 ) 15444 - 15451 2023年
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Synthesis of Trimethylene Carbonates and Polycarbonates from Oxetanes and CO2 Using Bifunctional Aluminum Porphyrin Catalysts 査読
Chihiro Maeda, Hina Inoue, Ayano Ichiki, Takumi Okihara, Tadashi Ema
ACS Catalysis 12 ( 22 ) 13042 - 13049 2022年10月
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Manussada Ratanasak, Takumi Murata, Taishin Adachi, Jun‐ya Hasegawa, Tadashi Ema
Chemistry – A European Journal 28 ( 58 ) e202202210 2022年10月
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Binaphthyl‐Bridged Pyrenophanes: Intense Circularly Polarized Luminescence Based on a D 2 Symmetry Strategy 査読
Kazuto Takaishi, Sho Murakami, Fumiya Yoshinami, Tadashi Ema
Angewandte Chemie International Edition 61 ( 26 ) e202204609 2022年7月
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Ruthenium Complexes Bearing Axially Chiral Bipyridyls: The Mismatched Diastereomer Showed Red Circularly Polarized Phosphorescence 査読
Kazuto Takaishi, Yusuke Nakatsuka, Hitomi Asano, Yuya Yamada, Tadashi Ema
Chemistry – A European Journal 28 ( 6 ) e202104212 2022年1月
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Deoxygenative CO2 conversions with triphenylborane and phenylsilane in the presence of secondary amines or nitrogen-containing aromatics 査読
Takumi Murata, Mahoko Hiyoshi, Shinsuke Maekawa, Yuta Saiki, Manussada Ratanasak, Jun-ya Hasegawa, Tadashi Ema
Green Chemistry 24 ( 6 ) 2385 - 2390 2022年
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Enhancement of protein thermostability by three consecutive mutations using loop-walking method and machine learning 査読
Kazunori Yoshida, Shun Kawai, Masaya Fujitani, Satoshi Koikeda, Ryuji Kato, Tadashi Ema
Scientific Reports 11 ( 1 ) 2021年12月
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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年11月
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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年11月
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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年8月
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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年4月
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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年12月
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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年10月
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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年9月
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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年6月
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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年5月
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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年5月
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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年5月
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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年4月
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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年1月
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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年1月
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Macrocyclic multinuclear metal complexes acting as catalysts for organic synthesis 査読
Bikash Dev Nath, Kazuto Takaishi, Tadashi Ema
Catalysis Science and Technology 10 ( 1 ) 12 - 34 2020年
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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年7月
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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年7月
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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年4月
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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年3月
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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年3月
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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年
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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年
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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年
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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年9月
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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年4月
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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年
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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年
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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年12月
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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年9月
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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年8月
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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年7月
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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年4月
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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年3月
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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年
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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年
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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年
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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年12月
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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年11月
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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年10月
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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年5月
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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年5月
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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年3月
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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年6月
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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年4月
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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年1月
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Chemical modification of lipase for rational enhancement of enantioselectivity
Tadashi Ema, Hiroki Inoue
Chemistry Letters 44 ( 10 ) 1374 - 1376 2015年
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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年10月
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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年6月
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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年3月
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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年
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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年9月
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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年9月
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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年4月
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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年12月
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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年11月
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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年8月
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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年4月
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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年1月
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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年
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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年5月
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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年1月
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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年12月
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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年9月
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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年8月
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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年7月
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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年
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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年11月
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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年11月
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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年11月
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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年9月
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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年2月
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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年1月
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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年
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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年
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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年
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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年8月
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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年
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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年8月
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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年6月
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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年5月
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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年10月
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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年10月
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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年9月
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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年4月
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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年3月
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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年2月
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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年
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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年10月
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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年9月
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Mechanism of enantioselectivity of lipases and other synthetically useful hydrolases
Tadashi Ema
Current Organic Chemistry 8 ( 11 ) 1009 - 1025 2004年7月
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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年6月
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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年
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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年12月
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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年8月
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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年7月
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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年6月
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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年
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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年6月
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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年4月
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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年12月
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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年5月
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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年
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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年6月
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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年10月
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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年8月
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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年8月
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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年7月
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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年7月
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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年2月
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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年7月
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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年4月
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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年3月
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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年
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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年11月
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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年3月
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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年
-
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年11月
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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年10月
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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年8月
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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年1月
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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年
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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年
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Complexation-induced Catalysis in Zinc Insertion into Cationic Porphyrin 査読
Mizutani, T, Koyama, H, Ema, T, Nomura, A, Yoshida, T, Ogoshi, H
Chem. Lett. ( 10 ) 941 - 942 1995年
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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年9月
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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年8月
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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年5月
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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年
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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年
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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年3月
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Selective syntheses of unsymmetrical meso-arylporphyrins
Tadashi Ema, Yasuhisa Kuroda, Hisanobu Ogoshi
Tetrahedron Letters 32 ( 35 ) 4529 - 4532 1991年