Iridium-Catalyzed Enantioselective Allylic Substitution of Vinylcyclopropanes by Carboxylic Acids

An efficient method for a highly regio-and enantioselective allylic substitution of vinylcyclopropanes using carboxylic acids as oxygen nucleophile via iridium catalysis has been developed. This represents a highly atom-economic approach for the synthesis of synthetically useful chiral building blocks in high yields. The practical utility of this method is demonstrated by the application of the products in useful transformations.