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K. Masuda

University of Toyama

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Featured researches published by K. Masuda.

Journal of The Chemical Society-perkin Transactions 1 | 1979

Studies on mesoionic compounds. Part 6. Synthesis of three new mesoionic heterocyclic systems; sulphur-containing analogues of sydnone

K. Masuda; Jun Adachi; Keiichi Nomura

The synthesis of three new classes of mesoionic heterocycle, 1,2,3-oxadiazolium-5-thiolate (3), 1,2,3-thiadiazolium-5-olate (4), and 1,2,3-thiadiazolium-5-thiolate (6), from the Meerwein alkylation product of sydnone is described.

Journal of The Chemical Society-perkin Transactions 1 | 1979

Studies on mesoionic compounds. Part 7. Some aspects of the reaction of the 1,2,3-thiadiazolium-4-olate system

K. Masuda; Jun Adachi; Keiichi Nomura

Several derivatives of mesoionic 5-substituted 1,2,3-thiadiazolium-4-olate were synthesised. The 5-aminoderivative (2i) gave a new mesoionic system, 1,2,3-thiadiazolium-5-ethoxycarbonylaminide (4), upon methylation with methyl fluorosulphonate.

Chemical & Pharmaceutical Bulletin | 1977

Studies on mesoionic compounds. V. Synthesis and cycloaddition reaction of anhydro-5-hydroxy-1,3-oxathiolium hydroxide system.

K. Masuda; Jun Adachi; Keiichi Nomura

Chemical & Pharmaceutical Bulletin | 1977

Studies on Heterocyclic Compounds. VI. Syntheses of Oudenone and Its Related Compounds. (1)

Teruaki Tsujikawa; Yasushi Nakagawa; Kazuo Tsukamura; K. Masuda

Chemical & Pharmaceutical Bulletin | 1976

Synthesis and Reaction of 1-(N, N-Disubstituted amino) pyrazoles

Shoji Kishimoto; Shunsaku Noguchi; K. Masuda

Yakugaku Zasshi-journal of The Pharmaceutical Society of Japan | 1975

[Studies on heterocyclic compounds. III. Synthesis of 2-(2,6-dichlorobenzylidenehydrazino)-1,4,5,6-tetrahydropyrimidine hydrochloride and its related compounds (author's transl)].

Teruaki Tsujikawa; Masanori Hayashi; K. Masuda

ChemInform | 1977

SYNTHESIS OF OUDENONE AND ITS RELATED COMPOUNDS

Teruaki Tsujikawa; Tasushi Nakagawa; Kazuo Tsukamura; K. Masuda

ChemInform | 1983

Studies on Mesoionic Compounds. Part 13. Synthesis of Mesoionic 1,2,3-Thiadiazolium-4-thiolates.

J. Adachi; H. Takahata; K. Momura; K. Masuda

ChemInform | 1981

STUDIES ON MESOIONIC COMPOUNDS. XII. SYNTHESIS OF 1,2,3-THIADIAZOLIUM-4-AMINIDE DERIVATIVES AND THEIR CHARACTERIZATION

K. Masuda; J. Adachi; H. Morita; Keiichi Nomura

ChemInform | 1981

STUDIES ON MESOIONIC COMPOUNDS. PART 11. ALKYLATION OF 5-ACYLAMINO-1,2,3-THIADIAZOLES

K. Masuda; J. Adachi; H. Nate; H. Takahata; Keiichi Nomura

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Keiichi Nomura

Kyoto University

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Teruaki Tsujikawa

Takeda Pharmaceutical Company

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Kazuo Tsukamura

University of Toyama

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Jun Adachi

University of Toyama

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Shoji Kishimoto

University of Toyama

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Shunsaku Noguchi

University of Toyama

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Yasushi Nakagawa

University of Toyama

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