PROCESS FOR THE SEPARATION OF D-PHENYL-GLYCINAMIDE OR D-ALKOXY-PHENYL-GLYCINAMIDA AND OF L-PHENYL-GLYCINE AND L-ALKOXY-PHENYL-GLYCINE

摘要

A process is disclosed for the separation of a mixture of an optically active alpha -phenylglycine amide and the corresponding optically active alpha -phenylglycine acid, through the formation of a novel Schiff base of at least the amide, and achieving the separation with the resulting solubility differences while substantially completely avoiding racemization.