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Akira Ninagawa

Osaka University

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Publication

Featured researches published by Akira Ninagawa.

Tetrahedron Letters | 1983

A facile synthesis of a new type of oxadiazabicyclo[3,3,1]nonanes

Haruo Matsuda; Akira Ninagawa; Akio Baba; Koichiro Sato

Abstract 2,4-Dialkyl-9-oxa-2,4-diazabicyclo[3,3,1]nonan-3-ones were easily prepared by the acid-catalyzed reactions of glutaraldehyde with 1,3-dialkylureas in aqueous conditions, whereas in the absence of water only the copolymerization was observed.

Die Makromolekulare Chemie, Rapid Communications | 1982

Formaldehyde polymers, 29. Isolation and characterization of calix[5]arene from the condensation product of 4-tert-butylphenol with formaldehyde†

Akira Ninagawa; Haruo Matsuda

Chemische Berichte | 1989

Regioselective cycloaddition of 1,2-disubstituted aziridines to heterocumulenes catalyzed by organoantimony halides

Ryoki Nomura; Takahiro Nakano; Yoshitaka Nishio; Sachiko Ogawa; Akira Ninagawa; Haruo Matsuda

Macromolecular Chemistry and Physics | 1985

Preparation of 4-tert-butyloxocalix [n] arenes and their properties as UV-absorbers

Akira Ninagawa; Kazuhiro Cho; Haruo Matsuda

Macromolecular Chemistry and Physics | 1979

Formaldehyde polymers, 26. Syntheses and condensations of substituted triphenoxy and triphenyl derivatives of 1,3,5-triazine†

Akira Ninagawa; Masao Kawazoe; Haruo Matsuda

Die Makromolekulare Chemie, Rapid Communications | 1980

Polymerization of ethylene oxide by organoantimony compounds

Ryoki Nomura; Hitoshi Hisada; Akira Ninagawa; Haruo Matsuda

Macromolecular Chemistry and Physics | 1983

Polymerization of ethylene oxide catalyzed by triphenylstibine oxide

Ryoki Nomura; Yasuro Shiomura; Akira Ninagawa; Haruo Matsuda

Macromolecular Chemistry and Physics | 1982

Polymerization of ethylene oxide. A novel binary catalyst system consisting of triphenylantimony dibromide and triphenylphosphine

Ryoki Nomura; Hitoshi Hisada; Akira Ninagawa; Haruo Matsuda

Macromolecular Chemistry and Physics | 1982

Formaldehyde polymers, 30. Preparation of 5-hydroxy-4-chromanones and 8-hydroxy-1-tetralon and their properties as UV-absorbers†

Akira Ninagawa; Masashi Nakamura; Haruo Matsuda

Die Makromolekulare Chemie, Rapid Communications | 1981

Formaldehyde polymers, 28. Synthesis of a high molecular weight novolak-type Polymer†

Akira Ninagawa; Haruo Matsuda

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Haruo Matsuda

Osaka University

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Ryoki Nomura

Osaka University

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Hitoshi Hisada

Osaka University

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Kazuyoshi Oohashi

Osaka University

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Sumio Matsuda

Osaka University

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Akio Baba

Osaka University

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Hideki Takeuchi

Osaka University

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Kazuhiro Cho

Osaka University

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Koichiro Sato

Osaka University

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Masao Kawazoe

Osaka University

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