A convenient synthesis of N-methyl-3-(2-ethenylphenyl)-1(2H)-isoquinolones, key models for the elaboration of the benzo[c] phenanthridinone and phenanthridine skeletons

Article abstract of DOI:10.1016/S0040-4039(00)61461-2

A variety of N-methyl-3-(2-ethenylphenyl)-1(2H)-isoquinolones 1a-e have been prepared by base-induced intramolecular cyclization of N-(2-ethenylbenzoyl)-N,2-dimethylbenzamide derivatives 2a-e. The concomitant formation of the fused dihydro benzo[c]phenant