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Obituary
Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Paper | Special issue | Vol 88, No. 1, 2014, pp.233-243
Published online, 31st May, 2013
Published online, 31st May, 2013
DOI: 10.3987/COM-13-S(S)6
■ Cu/HP20-Catalyzed Solvent-Free Huisgen Cycloaddition at Ordinary Temperatures
Yoshiaki Kitamura, Kazumi Taniguchi, Tomohiro Maegawa, Yasunari Monguchi, Yukio Kitade, and Hironao Sajiki*
*Laboratory of Organic Chemistry, Department of Pharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigakunishi, Gifu 501-1196, Japan
Abstract
We have developed an environmentally friendly and highly efficient solvent-free Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction using a polymer-supported copper catalyst (Cu/HP20). Substrates poorly soluble in common organic solvents are also applicable to the present cycloaddition reaction without any solvents and provide the corresponding 1,4-triazole in high yields.
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