A Facile Synthesis of 5-Phenyl-Dibenzo[b, g][1,8]Napthyridines
The Vilsmeier Haack heterocyclization of 2-aryl amino-4-phenyl quinolines quinoline yielded the hitherto unknown 5-phenyl-dibenzo[b,g][1,8]naphthyridines in quantitative yield. The synthesis of aryl amines was achieved by the action of anilines on 2-chloro-4-phenyl quinoline, which in turn was sourced through the combes reaction of benzoyl acetanilides.