Asymmetric Photocyclization of N-a,b-Unsaturated Acylanilides

Abstract

Photocyclization of the acylanilides (la and b) and (3a and b) in the presence of a chiral dibasic acid yielded the optically active quinolones (2a and b), (4b1, and ( 5 3 and b) with optical yields ranging from 12 to 42 %.