Cycloadditions in Syntheses. XXXVII. : Syntheses of 6-Trifluoromethyl-1,2,4-triazines and -1,2,4-triazin-5-ones and Their Pericyclic Reactions with Olefins
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概要
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6-Trifluoromethyl-1,2,4-triazines and -1,2,4-triazin-5-ones were synthesized to investigate the role of the trifluoromethyl group in their thermal as well as photochemical cycloaddition reactions with olefins. In photochemical 2+2 cycloaddition using the triazin-5-ones and -3,5-diones, the activation of the imine function by the trifluoromethyl group is demonstrated and a new route to azetidine derivatives having a trifluoromethyl group is disclosed. In thermal 4+2 cycloaddition using the corresponding triazines, acceleration of the so-called inverse electron demand Diels-Alder reaction is demonstrated. Clarification of the mechanisms of these reactions and their use in the synthesis of azetidin-2-ones and pyridines having a trifluoromethyl group are also described.
- 社団法人日本薬学会の論文
- 1988-09-25
著者
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金子 主税
東北大学
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金子 主税
Pharmaceutical Institute Medical Faculty University Of Tokyo
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渡辺 博司
Pharmaceutical Institute Tohoku University
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片桐 信弥
Pharmaceutical Institute, Tohoku University
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片桐 信弥
Health Sci. Univ. Hokkaido Hokkaido Jpn
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片桐 信弥
Pharmaceutical Institute Tohoku University
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