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Affiliation |
Graduate School of Engineering Science Department of Life Science Life Science Course |
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Mail Address |
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TAKAMURA Hiroyoshi
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Graduating School 【 display / non-display 】
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-2000.03
Tohoku University Faculty of Science Graduated
Graduate School 【 display / non-display 】
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-2005.03
Tohoku University Graduate School, Division of Natural Science Doctor's Degree Program Completed
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-2002.03
Tohoku University Graduate School, Division of Natural Science Master's Degree Program Completed
Campus Career 【 display / non-display 】
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2026.09-Now
Akita University Graduate School of Engineering Science Department of Life Science Life Science Course Associate Professor
External Career 【 display / non-display 】
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2023.04-2026.08
Okayama University Associate Professor
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2021.04-2023.03
Okayama University Associate Professor
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2015.03-2021.03
Okayama University Graduate School of Natural Science and Technology Associate Professor
Research Areas 【 display / non-display 】
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Nanotechnology/Materials / Synthetic organic chemistry
Research Achievements 【 display / non-display 】
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Photochemical Macrolactonization of Hydroxyaldehydes via C–H Bromination
Sakura Kodaki, Haru Ando, Hiroyoshi Takamura, Isao Kadota, Kenta Tanaka
Precision Chemistry ( American Chemical Society (ACS) ) 2025.11 [Refereed]
Research paper (journal)
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The Direct Photochemical Cross-Esterification of Alcohols via Site-Selective C-H Bromination
Atsuya Miyamoto, Hiroyoshi Takamura, Isao Kadota, Kenta Tanaka
Chemical Communications ( Royal Society of Chemistry (RSC) ) 61 ( 89 ) 17364 - 17367 2025.10 [Refereed]
Research paper (journal)
We have developed a direct photochemical cross-esterification of alcohols that proceeds via the in-situ generation of acyl bromides. The C-H bond of a benzyl alcohol is selectively activated by a...
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Shuta Horiuchi, Masato Oishi, Asuka Mizutani, Hiroyoshi Takamura, Isao Kadota, Kenta Tanaka
Chemical Communications ( Royal Society of Chemistry (RSC) ) 61 ( 84 ) 16376 - 16379 2025.09 [Refereed]
Research paper (journal)
Novel xanthene-based alkyl radical precursors were developed and subjected to photocatalytic C(sp<sup>3</sup>)–C(sp<sup>3</sup>) bond cleavage for the efficient generation of alkyl radicals, which were reacted with various alkenes to afford the Giese-type products.
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Recent progress on phenothiazine organophotoredox catalysis
Kenta Tanaka, Hiroyoshi Takamura, Isao Kadota
Tetrahedron Letters ( Elsevier BV ) 169 155745 2025.07 [Refereed] [Invited]
Research paper (journal)
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Asuka Mizutani, Momo Kondo, Shoko Itakura, Hiroyoshi Takamura, Yujiro Hoshino, Makiya Nishikawa, Isao Kadota, Kosuke Kusamori, Kenta Tanaka
Bulletin of the Chemical Society of Japan ( Oxford University Press (OUP) ) 98 ( 6 ) uoaf044 2025.05 [Refereed]
Research paper (journal)
Abstract
The redox potential is an important factor for controlling the outcome of photoredox catalysis. Particularly, the selective oxidation of substrates and the control over the reactions are challenging when using photoredox catalysts that have high excited-state reduction potentials. In this study, a redox-potential-controlled intermolecular [2 + 2] cycloaddition of styrenes using a thioxanthylium organophotoredox (TXT) catalyst has been developed. This TXT catalyst selectively oxidizes β-halogenostyrenes and smoothly promotes the subsequent intermolecular [2 + 2] cycloadditions to give multisubstituted halogenocyclobutanes with excellent regio- and diastereoselectivity, which has not been effectively achieved by the hitherto reported representative photoredox catalysts. The synthesized halogenocyclobutanes exhibit interesting free radical scavenging activity. The present reaction contributes to the field of redox-potential-controlled electron transfer chemistry. -
Development of the Novel Antifouling Agent based on Organic Synthesis
高村浩由, 遠藤紀之
Annual Report of the Okayama Foundation for Science and Technology ( 26 ) 2017
◆Original paper【 display / non-display 】
◆Other【 display / non-display 】
Books 【 display / non-display 】
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New Tide of Natural Product Chemistry
Hiroyoshi Takamura
Springer 2023 ISBN: 9789819917136
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Protecting-Group-Free Organic Synthesis : Improving Economy and Efficiency
Hiroyoshi Takamura, Isao Kadota
John Wiley & Sons 2018 ISBN: 9781119295204
Presentations 【 display / non-display 】
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Redox Potential Controlled Intermolecular [2+2] Cycloadditions for the Synthesis of Halocyclobutanes via Organophotoredox Catalysis
Asuka Mizutani, Kenta Tanaka, Hiroyoshi Takamura, Isao Kadota
10th German Japanese Symposium on Electrosynthesis 2023.06 - 2023.06
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Moderately Oxidizing Thioxanthylium Organophotoredox Catalysts for Radical-Cation Diels–Alder Reactions
Kenta Tanaka, Mami Kishimoto, Naoya Ohtsuka, Toshiyasu Suzuki, Norie Momiyama, Hiroyoshi Takamura, Isao Kadota, Yujiro Hoshino
10th German Japanese Symposium on Electrosynthesis 2023.06 - 2023.06
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Efficient Synthesis of Ozonides under Dry Conditions
Mohamed R. El-kholany, Nana Kishimoto, Kenta Tanaka, Hiroyoshi Takamura, Isao Kadota
The 103rd CSJ Annual Meeting 2023.03 - 2023.03
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Synthetic Approach toward the Structural Elucidation of Natural Products
Hiroyoshi Takamura [Invited]
Sakura Science Program 2022.01 - 2022.01
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Formal Total Syntheses of Enigmazole A and Neopeltolide
2018.09 - 2018.09
Academic Activity 【 display / non-display 】
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2025
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2024
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2019
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2018-2022
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2014
Media Report 【 display / non-display 】
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https://www.eurekalert.org/news-releases/1108112
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https://www.okayama-u.ac.jp/tp/release/release_id1465.html
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https://sj.jst.go.jp/news/202504/n0418-03k.html
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https://www.keguanjp.com/kgjp_keji/kgjp_kj_sea/pt20250408000012.html
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https://www.agara.co.jp/article/470506