Process for the asymmetric hydrogenation of beta-amino ketones

摘要

The process for the preparation of enantiomerically enriched or enantiomerically pure (S)- or (R)-N-monosubstituted beta-amino alcohols of formula (I) and their addition salts of proton acids, X represents S or O, and R represent C_1-6-alkyl, C_3-8-cycloalkyl, aryl or aralkyl.