Ruthenium‐Catalyzed Enantioselective Propargylation of Aromatic Compounds with Propargylic Alcohols via Allenylidene Intermediates

High enantioselectivity was achieved in the Ru-catalyzed propargylation of furans and N,N-dimethylaniline derivatives to afford the propargylated aromatic compounds. This first asymmetric propargylation of aromatic compounds provides a novel protocol for the asymmetric Friedel–Crafts alkylation using propargylic alcohols as a new type of electrophile. Cp*=C5Me5