Formation of 3H-1,3-benzodiazepines from quinoline N-acylimides
Abstract
Photolysis of the quinoline N-imides (3) having an electron-donating substituent in the 6- or 8-position affords the corresponding 3H-1,3-benzodiazepines (4), whereas quinolines having an electron-donating group in the other positions or an electron-withdrawing group give no diazepines.