Iridium-Catalyzed Regio- and Enantioselective Allylic Substitution with Aromatic and Aliphatic Sulfinates

The iridium-catalyzed allylation of sodium sulfinate to form branched allylic sulfones is reported. The reactions between various sodium sulfinates and achiral allylic carbonates occur in good yields, with high selectivity for the branched isomer, and high enantioselectivities (up to 98% ee).