Manufacturing method of preparation and an optically active carboxylic acid of the optically active ester

Thereby producing an optically active ester of one enantiomer of a racemic carboxylic acid with high selectivity esterification provides a method for producing an optically active carboxylic acid is the other enantiomer. Select a carboxylic acid of racemic and a specific alcohol or phenol derivative, benzoic anhydride or a derivative thereof and tetramisole, are reacted in the presence of a catalyst such as benzo Tetramyristoyl sole, one enantiomer of the carboxylic acid of racemic manner by esterification, for producing an optically active carboxylic acid with the production of optically active esters.