Hypercrosslinking chiral Brønsted acids into porous organic polymers for efficient heterogeneous asymmetric organosynthesis

Abstract

Here, we developed a construction strategy for directly immobilizing the axially chiral phosphoric acid into hypercrosslinked polymers by a one-pot Friedel–Crafts alkylation reaction. The obtained chiral polymers have high porosity, excellent stability and tailorable catalytic centers, and display excellent activity, enantioselectivity and recyclability for asymmetric transfer hydrogenation.