Chiral Catalytic Membranes

Abstract

The heterogenization of chiral homogeneous catalysts is possible by occluding them in polydimethylsiloxane membranes. Examples are the synthesis of the first heterogeneous Jacobsen catalyst, which catalyzes the epoxidation of olefins, and the novel immobilization of Ru-BINAP, which is active in the enantioselective hydrogenation of ketones. The modified membranes are as efficient in these reactions sketched below as the homogeneous catalysts.