Chiral Tandem Modifiers: Highly Efficient Cinchonidine-Derivative Modifiers at Low Concentrations for the Enantioselective Hydrogenation of (E)-2,3-Diphenylpropenoic acid over Pd/C

A novel group of chiral modifiers is successfully developed to achieve high enantioselectivity in the asymmetric hydrogenation of (E)-2,3-diphenylpropenoic acid (PCA) over Pd/C. It is found that the tandem modifiers...