A. Kotali et al., Oxidation 2-amino-2 '-hydroxybenzophenone N-acylhydrazones: Synthesis of 6-substituted dibenzazepin-11-ones, HETEROCYCLE, 55(6), 2001, pp. 1057-1062
The synthesis of 6-substituted 11H-dibenz[b,e]azepin-11-ones is reported vi
a the lead tetraacetate oxidative cyclization of 2-amino-2-hydroxybenzophen
one N-acylhydrazones. A mechanism involving formation of a 2-acyl-2'-aminob
enzophenone intermediate is proposed.