METHOD FOR THE PREPARATION OF CHIRAL EPOXIDES

摘要

The present invention relates to a method for the preparation of chiral epoxides, more particularly, to a method for preparing chiral epoxides by means of asymmetric epoxidation, comprising reacting olefins with oxidizing agents in the presence of one or more ionic liquids or mixture thereof with other organic solvents and chiral salen metallic catalysts. Such a method facilitates recovery and reuse of the expensive chiral salen metallic catalysts in which they maintain their activity and enantioselectivity such that chiral epoxides can be prepared in an economic manner.