Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Toshio Hamasaki"'
1
A buffer zone in the crystal structure that governs the solid-state photodimerization of bulky olefins with the 1,4-dihydropyridine skeleton
Autor: Toshio Hamasaki, Takayuki Ogawa, Nobuhiro Marubayashi, Noriaki Hirayama
Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :1309-1314
Due to steric hindrance, bulky olefins cannot readily undergo solid-state photodimerization. UV irradiation of crystals of (4RS,1′RS)-methyl 1-phenyl-2-piperidinoethyl 1,4-dihydro-2,6-dimethyl-4-(2-thienyl)pyridine-3,5-dicarboxylate (1), however, a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cec7813c165826c8fd83236fe77714b
https://doi.org/10.1039/a608454k
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2
ChemInform Abstract: A Novel Photochemical Transformation of Methyl 6-Chloro-3,4-dihydro-4- methyl-3-oxo-2H-1,4-benzoxazine-8-carboxylate to β-Lactams
Autor: Nobuhiro Marubayashi, Takanobu Kuroita, Ikuhiko Ueda, Takayuki Ogawa, Toshio Hamasaki
Publikováno v: ChemInform. 24
A unique photoreaction of methyl 6-chloro-3,4-dihydro-4-methyl-3-oxo-2 H -1,4-benzoxazine-8-carboxylate in methanol gives four β -lactam compounds, methyl 6-chloro-2,9-dioxo-1-methyl-1-azaspiro[3.5]nona-5,7-diene-8-carboxylate and three stereoisomer
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::058eebbd3b881e8130459a51596c52c0
https://doi.org/10.1002/chin.199301165
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3
A novel photochemical transformation of methyl 6-chloro-3,4-dihydro-4-methyl-3-oxo-2H-1,4-benzoxazine-8-carboxylate to β-lactams
Autor: Ikuhiko Ueda, Nobuhiro Marubayashi, Toshio Hamasaki, Takayuki Ogawa, Takanobu Kuroita
Publikováno v: Tetrahedron Letters. 33:4585-4588
A unique photoreaction of methyl 6-chloro-3,4-dihydro-4-methyl-3-oxo-2 H -1,4-benzoxazine-8-carboxylate in methanol gives four β -lactam compounds, methyl 6-chloro-2,9-dioxo-1-methyl-1-azaspiro[3.5]nona-5,7-diene-8-carboxylate and three stereoisomer
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a05f98ff20b9eaf17d2d0af886ef723
https://doi.org/10.1016/s0040-4039(00)61319-9
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4
Preparation and Characterization of Machinable Mica Glass-Ceramics by the Sol-Gel Process
Autor: Toshio Hamasaki, Yoshinori Koyanagi, Taizo Utsunomiya, Katsuya Eguchi, Keiichirou Koba, Akira Matsumoto
Publikováno v: Journal of the American Ceramic Society. 71:1120-1124
The preparation and characterization of machinable mica glass-ceramics by the sol-gel process are described. The thermal behavior of the precursor and the optimum conditions for calcination, molding, and sintering are given. Physical, chemical, therm
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5dd46d86938279e12ff4acb5bd704cad
https://doi.org/10.1111/j.1151-2916.1988.tb05802.x
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7
Direct Separation of Enantiomers by Reversed-phase High Performance Liquid Chromatography on Cellulose Tris(3,5-dimethylphenylcarbamate)
Autor: Takayuki Ogawa, Matsumoto Takashi, Ikeda Kuniki, Hisashi Kohno, Sakai Junichi, Toshio Hamasaki
Publikováno v: Chemistry Letters. 18:1089-1090
Various types of enantiomeric drugs were optically separated by reversed-phase high performance liquid chromatography using cellulose tris(3,5-dimethylphenylcarbamate) as a chiral stationary phase.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::521470d3719b49def67234f48dd75528
https://doi.org/10.1246/cl.1989.1089
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