 It was found that increasing steric bulk of the imine substituents lead to decreased yield and "ee" of the amine product.methoxy-substituted imines exhibit to superior yield and "ee"'s.A group of catalysts, Frustrated Lewis pairs of chiral alkenylboranes and phosphines are beneficial for asymmetric Piers-type hydrosilylations of 1,2-dicarbonyl compounds and alpha-keto Esters, resulting in products of high yield enantioselectivity.