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Akira Katoh

University of Tsukuba

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Publication

Featured researches published by Akira Katoh.

Tetrahedron Letters | 1983

Independent synthesis of three types of n-substituted dihydropyrimidines and their reactions with malachite green

Choji Kashima; Masao Shimizu; Akira Katoh; Yoshimori Omote

Abstract Pyrimidine-2(1H)-thiones and their corresponding dihydro-derivatives were treated with Raney nickel to afford respectively three types of dihydropyrimidine isomers, which reacted with malachite green in similar rate constants to 1-benzyl-1,4-dihydronicotinamide.

Journal of Heterocyclic Chemistry | 1981

Preparation of N-aryl-2,4-diaminopentanes by the ring opening reaction of 1-aryl-3,4,5,6-tetrahydro-2-(1H)pyrimidinones

Choji Kashima; Akira Katoh; Nobutoshi Yoshiwara; Yoshimori Omote

Chemical & Pharmaceutical Bulletin | 1984

Ring Transformation Reactions of 1-Substituted 2 (1H)-Pyrimidinones and Related Compounds with Active Methylene Compounds

Akira Katoh; Yoshimori Omote; Choji Kashima

Chemical & Pharmaceutical Bulletin | 1981

Ring Transformation Reaction of 1, 4, 6-Trisubstituted 2 (1H)-Pyrimidinones and -Thiones with Hydroxylamine

Choji Kashima; Akira Katoh; Yuko Yokota; Yoshimori Omote

Journal of Heterocyclic Chemistry | 1984

The reformatsky reaction of 1-aryl-2(1H)pyrimidinones

Akira Katoh; Yoshimori Omote; Choji Kashima

Journal of Heterocyclic Chemistry | 1984

Ring opening reaction of N‐substituted dihydropyrimidines with metal hydride complexes

Choji Kashima; Masao Shimizu; Akira Katoh; Yoshimori Omote

Chemical & Pharmaceutical Bulletin | 1982

Dimroth-Type Ring Transformation of 1, 4, 6-Trisubstituted-2 (1H)-Pyrimidinethiones with Ammonia and Primary Alkyl Amines

Choji Kashima; Akira Katoh; Yuko Yokota; Yoshimori Omote

Journal of Heterocyclic Chemistry | 1980

The selective preparation of 1,4-diaryl-6-methyl- and 1,6-diaryl-4-methyl-2-(1H)pyrimidinones

Choji Kashima; Akira Katoh

Journal of Heterocyclic Chemistry | 1985

Reaction of 6-phenyl-2-(p-toluenesulfonyl)-3(2H)pyridazinone with grignard reagents

Choji Kashima; Akira Katoh; Miyuki Fukasawa; Yoshimori Omote

Journal of Heterocyclic Chemistry | 1984

The regioselective alkylation of 4,6-dimethyl-1-phenyl-2(1H)-pyrimidinone

Akira Katoh; Yoshimori Omote; Choji Kashima

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Choji Kashima

University of Tsukuba

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Yoshimori Omote

University of Tsukuba

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Yuko Yokota

University of Tsukuba

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Masao Shimizu

University of Tsukuba

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Miyuki Fukasawa

University of Tsukuba

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Nobutoshi Yoshiwara

University of Tsukuba

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Yoshimari Omote

University of Tsukuba

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