Highly efficient copper(I) iodide-tolyl-BINAP-catalyzed asymmetric conjugate addition of methylmagnesium bromide to α,β-unsaturated esters

A highly efficient asymmetric conjugate addition of methylmagnesium bromide (MeMgBr) to alpha,beta-unsaturated esters catalyzed by copper(I) iodide-tolyl-BNIP (CuI-Tol-BINAP) is described.