A method that manufacturers an optically active carboxylic acid ester at high yield and high enantioselectivity is provided. An optically active carboxylic acid ester is manufactured at high yield and high enantioselectivity by reacting a racemic carboxylic acid and a specific alcohol or phenol derivatives in a polar solvent having a dipole moment of 3.0 or higher in the presence of an acid anhydride and an asymmetric catalyst, esterifying one enantiomer of the racemic carboxylic acid at high selectivity, and increasing the amount of esterified carboxylic acid by racemizing the optically active carboxylic acid which is the other enantiomer not used in esterification.
提供一种在高产率和高对映选择性下制造光学活性
羧酸酯的方法。通过在极性溶剂中,以酸酐和不对称催化剂的存在下,将一个非对映的
羧酸和特定醇或
酚衍
生物反应,制造高产率和高对映选择性的光学活性
羧酸酯,通过酯化一个非对映体的非对映体
羧酸,提高酯化
羧酸的量,通过消旋未用于酯化的光学活性
羧酸来消旋。