II. Preparation of 2,3-divalent diamond derivatives

摘要

The Invention relates to a method for preparing forms enantiomu00e8ricas Derivatives of fu00f4rmula acid 2,3 - diamu00ecnopropiu00f3nico CIE (L), where R1, R2 and R3 are as defined in the Claims, resoiuciu00f3n racemate.The separation of enantiomers in its racemate takes place through the formation of diastereu00f3meras leave to add an Auxiliary enantiomu00e9ricamente pure, and subsequent Separation by fractional Crystallization.