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Isamu Katsuyama

Gifu University

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Publication

Featured researches published by Isamu Katsuyama.

Tetrahedron Letters | 1996

An effective synthesis of trifluoromethyl-substituted 1,4-dihydropyridines with phosphorus oxychloride / pyridine adsorbed on silica gel

Isamu Katsuyama; Kazumasa Funabiki; Masaki Matsui; Hiroshige Muramatsu; Katsuyoshi Shibata

Abstract Treatment of α-alkoxycarbonyl-α,β-unsaturated trifluoromethyl ketones 1 with β-amino-crotonates 2 affords 2-hydroxy-6-methyl-2-trifluoromethyl-1,2,3,4-tetrahydropyridines 3 , which undergo dehydration by using phosphorus oxychloride / pyridine adsorbed on silica gel, giving good to high yields of 2-methyl-6-trifluoromethyl-1,4-dihydropyridines 4 .

Journal of Heterocyclic Chemistry | 1998

A new expedient route to 2,6-diaryl-3-cyano-4-(trifluoromethyl)pyridines

Yoshihiro Yamaguchi; Isamu Katsuyama; Kazumasa Funabiki; Masaki Matsui; Katsuyoshi Shibata

Synthesis | 1997

A Convenient and Regioselective Synthesis of 4-Trifluoromethylpyridines

Isamu Katsuyama; Seiya Ogawa; Yoshihiro Yamaguchi; Kazumasa Funabiki; Masaki Matsui; Hiroshige Muramatsu; Katsuyoshi Shibata

Bulletin of the Chemical Society of Japan | 1990

Synthesis of Ferrocenyl-Substituted 3-Cyano-2-methylpyridines

Katsuyoshi Shibata; Isamu Katsuyama; Masaki Matsui; Hiroshige Muramatsu

Journal of Heterocyclic Chemistry | 1993

Synthesis of 4,6-disubstituted 2-methylpyridines and their 3-carboxamides

Katsuyoshi Shibata; Isamu Katsuyama; Hideaki Izoe; Masaki Matsui; Hiroshige Muramatsu

Journal of Heterocyclic Chemistry | 1991

Synthesis of 3-cyano-2-methylpyridines substituted with heteroaromatics

Katsuyoshi Shibata; Isamu Katsuyama; Masaki Matsui; Hiroshiga Muramatsu

Heterocycles | 1998

A CONVENIENT ONE-POT SYNTHESIS OF 6-TRIFLUOROMETHYLPYRIDINES

Isamu Katsuyama; S. Ogawa; H. Nakamura; Yoshihiro Yamaguchi; Kazumasa Funabiki; Masaki Matsui; Hiroshige Muramatsu; Katsuyoshi Shibata

Synlett | 1997

A Convenient Synthesis of Difluoromethyl-Substituted Pyridines

Isamu Katsuyama; Kazumasa Funabiki; Masaki Matsui; Hiroshige Muramatsu; Katsuyoshi Shibata

Chemistry Letters | 1996

A Convenient Synthesis of α-Alkoxycarbonyl-α,β-unsaturated Trifluoromethyl Ketones

Isamu Katsuyama; Kazumasa Funabiki; Masaki Matsui; Hiroshige Muramatsu; Katsuyoshi Shibata

Heterocycles | 2008

A FACILE SYNTHESIS OF 2-DIFLUOROMETHYL-6-METHYLPYRIDINE-3,5-DICARBOXYLATES

Isamu Katsuyama; Kazumasa Funabiki; Masaki Matsui; Hiroshige Muramatsu; Katsuyoshi Shibata

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Katsuyoshi Shibata

Gifu University

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Masaki Matsui

Gifu University

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Hiroshige Muramatsu

Gifu University

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Kazumasa Funabiki

Gifu University

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Yoshihiro Yamaguchi

Gifu University

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H. Nakamura

Gifu University

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Hideaki Izoe

Gifu University

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Hiroshiga Muramatsu

Gifu University

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S. Ogawa

Gifu University

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Seiya Ogawa

Gifu University

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