An asymmetric allylic alkylation reaction of 3-alkylidene oxindoles

An efficient asymmetric allylic alkylation reaction with respect to 3-alkylidene oxindoles and racemic Morita-Baylis-Hillman carbonate has been achieved by using a chiral biscinchona alkaloid catalyst, which delivers the gamma-substituted alkylideneoxindoles with a chiral tertiary center in moderate to good yields (up to 92%) and very good enantioselectivities (up to >99% ee).