抄録
The photosensitized oxygenation of 1H-1, 2-benzodiazepines (6) in methanol gave fragment products (7-14). Phenyl ketones (7) are assumed to originate from the 5-hydroperoxide (5), and cinnamic acids (8 and 9), 3-methoxy-3H-1, 2-benzodiazepines (10), and indazoles (11-14) from the 3-hydroperoxide (16). Similar photooxygenation of 1-methyl-1H-1, 2-benzodiazepines (23) gave 3-oxo-1, 2-benzodiazepines (25), which may be formed via the zwitterionic 3-peroxide (24).
