'A NOVEL PROCESS FOR CHIRAL RESOLUTION OF HIGHLY PURE (6R)-6-(DIMETHYLAMINO)-4,4-DIPHENYL-3-HEPTANONE FROM RACEMIC METHADONE HYDROCHLORIDE'

摘要

The present invention discloses an improved process for preparing pure (dimethylarnino)-4,4-diphenyl-3-heptanone and its hydrochloride salt.