OPTICALLY ACTIVE QUARTERNARY AMMONIUM SALT WITH AXIAL CHIRALITY, METHOD FOR PRODUCING THEREOF, AND APPLICATION THEREOF FOR ASYMMETRIC SYNTHESIS OF ALPHA-AMINO ACID

摘要

A novel optically active quarternary ammonium salt with an axial chirality is provided. The quarternary ammonium salt can act as a phase-transfer catalyst to convert glycine derivatives into optically active alpha-amino acid derivatives by stereoselectively alkylating the glycine derivatives. Furthermore, according to the present invention, intermediates useful for producing the novel quarternary ammonium can be produced.