Copper(I) trifluoromethanesulfonate benzene complex has catalyzed allylic oxidation of cyclic alkenes enantioselectively. In combination with amino acid-based chiral phosphine ligands, catalyzes asymmetric conjugate additions of alkylzincs to acyclic ,∫-unsaturated ketones, affording ∫-alkylcarbonyls in high yield and with excellent enantioselectivity.
