Ir-Catalyzed Friedel-Crafts-Type Asymmetric Allylation of Furans.

Although many methods have been developed to access chiral furans, asymmetric catalytic transformations involving the direct use of furan substrates are less well explored. Herein, we describe the first examples of enantioselective Friedel-Crafts-type allylic alkylation reactions for the synthesis of chiral furans by employing 2- or 3-substituted derivatives and coupling these, through Ir catalysis, with branched allylic alcohols.