Charles W. Rees, Richard C. Storr and Peter J. Whittle
J. Chem. Soc., Chem. Commun., 1976, 411-412
DOI:
10.1039/C39760000411,
Paper
2-Arylbenzazetes are produced by photolysis of 4-arylbenzotriazines (1) and can be intercepted in cyclo-addition reactions; the benzazetes dimerise thermally to give the angular dimers (2) and, in the presence of Lewis acids, the linear dimers (5).