Decarboxylation Reactions. V. Reaction of N-Benzylideneanilines with Propiolic Acid

Abstract

It has been found that a decarboxylation reaction of propiolic acid proceeds with N-benzylideneaniline to give 2-phenylquinoline. Extention of this reaction furnishes generality for a convenient synthesis of 2-phenylquinoline derivatives. A plausible reaction path involving 3-anilino-3-phenyl-1-propyne intermediate is proposed.