Table 4. Oxidative Cyclizations.


3-(4′-Methoxyphenyl)-4-phenyl-1H-pyrrol-2(5H)-one (15ab) starting material was available from a previous study17d
Reported ratios of 16:15 were ascertained by 1H NMR analysis of methylene proton integrations
Yields refer to isolated yields of analytically pure products obtained after trituration with EtOH