Development of a Ruthenium‐Catalyzed Asymmetric Epoxidation Procedure with Hydrogen Peroxide as the Oxidant

Abstract

Novel pyboxazines and the known pybox ligands are used in the ruthenium-catalyzed asymmetric epoxidation of olefins with H2O2 (see scheme). This new catalytic system is successful in the conversion of differently substituted aromatic olefins and gives ee values of up to 84 %.