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General photochemical synthesis of 1H-1,2-benzodiazepines from N-iminoquinolinium ylide dimers

โœ Scribed by Tsuchiya, Takashi; Kurita, Jyoji; Snieckus, Victor

Book ID
121017231
Publisher
American Chemical Society
Year
1977
Tongue
English
Weight
883 KB
Volume
42
Category
Article
ISSN
0022-3263

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When N-chloroacetyl-3-hydroxybenzylamine (37) in aqueous acetonitrile was irradiated, both ortho and para photocyclizations with reference to the OH group occurred to give 7-and 5 -hydroxy -3 -oxo -1,2,3,4tetrahydroisoquinolines ($2, 53). Similarly, 1 -methylisoquinoline derivatives (54, 55) were sy