The resolution of some chiral drugs such as d, L-dansyl amino acid has certain rule, and provides information about absolute configuration.

The resolution of DL p hydroxyphenylglycine into its D and L isomers was studied by using aromatic sulfonic acid as resolving agent and water as solvent.

The item consisting of four parts: 1. syntheses of chiral ligand polymer of optical resolution of D, L-amino acids;