Synthesis of ɑ-Aryl-oxindoles via Grignard Reaction with Isatin in the Presence of Diphenyl Phosphite.

A protocol has been developed for the synthesis of α-aryl-oxindoles from isatin and Grignard reagents in the presence of diphenyl phosphite for the first time. This reaction was conveniently carried out under mild conditions in a one-pot fashion with moderate to excellent yields.