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Yuki Takuma

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Publication

Featured researches published by Yuki Takuma.

Journal of The Chemical Society-perkin Transactions 1 | 1976

Sensitised photo-oxidation of 5-methylene-cyclohexa- and -cyclohepta-1,3-diene derivatives

Nobuyuki Harada; Akira Kawamoto; Yuki Takuma; Hisashi Uda

Sensitised photo-oxidations of 5-benzyl-1,5-dimethyl-6-methylene-3-t-butylcyclohexa-1,3-diene and 1,5,5-trimethyl-7-methylenecyclohepta-1,3-diene produce the corresponding 1,4-epidioxides. Both thermal and photochemical decompositions of these peroxides afford only the diepoxides as isolated products.

Journal of the American Chemical Society | 1978

Circular dichroic power due to chiral exciton coupling between two polyacene chromophores

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

Journal of the American Chemical Society | 1976

The absolute stereochemistries of 6,15-dihydro-6,15-ethanonaphtho[2.3-c]pentaphene and related homologs as determined by both exciton chirality and x-ray Bijvoet methods

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

ChemInform | 1978

CIRCULAR DICHROIC POWER DUE TO CHIRAL EXCITON COUPLING BETWEEN TWO POLYACENE CHROMOPHORES

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

Journal of the American Chemical Society | 1980

Absolute stereochemistry and chiroptical properties of chiral tribenzotriptycene and benzotriptycenes

Nobuyuki Harada; Yasufumi Tamai; Yuki Takuma; Hisashi Uda

Bulletin of the Chemical Society of Japan | 1977

Synthesis and absolute stereochemistry of (+)-6,15-dihydro-6,15-ethanonaphtho[2,3-c]pentaphene as determined by exciton chirality and X-ray Bijvoet methods.

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

Bulletin of the Chemical Society of Japan | 1978

Synthesis and absolute stereochemistry of (+)-7,14-dihydro-7,14-ethanodibenz[a,h]anthracene and its derivatives.

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

ChemInform | 1976

THE ABSOLUTE STEREOCHEMISTRIES OF 6,15-DIHYDRO-6,15-ETHANONAPHTHO(2.3-C)PENTAPHENE AND RELATED HOMOLOGS AS DETERMINED BY BOTH EXCITON CHIRALITY AND X-RAY BIJVOET METHODS

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

ChemInform | 1980

ABSOLUTE STEREOCHEMISTRY AND CHIROPTICAL PROPERTIES OF CHIRAL TRIBENZOTRIPTYCENE AND BENZOTRIPTYCENES

Nobuyuki Harada; Yasufumi Tamai; Yuki Takuma; Hisashi Uda

ChemInform | 1978

SYNTHESIS AND ABSOLUTE STEREOCHEMISTRY OF (+)-7,14-DIHYDRO-7,14-ETHANODIBENZ(A,H)ANTHRACENE AND ITS DERIVATIVES

Nobuyuki Harada; Yuki Takuma; Hisashi Uda

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Hisashi Uda

Tohoku University

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Nobuyuki Harada

Tohoku University

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Yasufumi Tamai

Tohoku University

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