Enantioselective allylic substitution catalyzed by an iridium complex: remarkable effects of the counter cation
Abstract
Allylic substitution of a methyl carbonate of cinnamyl alcohol with the anion of dimethyl malonate gave the branched olefin with high enantioselectivity in the presence of (S)-1,1′-binaphthyl-2,2′-diyl phenyl phosphite when a combination of lithium and zinc was used as counter cation.