A practical strategy to access chiral α-aryloxy carboxylic acids through ion-pairing directed asymmetric hydrogenation†
Abstract
A series of optically active α-aryloxy carboxylic acids were obtained via Chenphos/Rh catalyzed highly efficient asymmetric hydrogenation. The proposed ion-pairing interaction between the ligand and the substrate plays a vital role in achieving high enantioselectivity.