公开(公告)号：DE3866434D1

公开(公告)日：1992-01-09

申请号：DE3866434

申请日：1988-06-08

Applicant: BASF AG

Inventor： PAUL AXEL DR ,  PETER TONNE DR ,  ROSKE ECKHARD ,  SIEGEL HARDO DR

IPC: C07C229/08 ,  C07C67/00 ,  C07C227/00 ,  C07C227/08 ,  C07C227/32

Abstract: In a new process for the prodn. of D- or L-alanine of high enantiomeric purity, an optically active chloropropionic acid of high enantiomeric purity is reacted with ammonia or ammonia-yielding cpds. at 50-110 deg. C in water or water/alcohol mixt. The pref. ammonia-yielding cpd. is urotropin (hexamethylene tetramine), although the reaction is pref. carried out with a mixt. of ammonia and urotropin Ammonia and ammonia-yielding cpd. are pref. used in an amt. of at least 2 mol per mol chloropropionic acid. The reaction is pref. carried out at 50-90 frg. C and pH 6-9.

公开(公告)号：AT69804T

公开(公告)日：1991-12-15

申请号：AT88109087

申请日：1988-06-08

Applicant: BASF AG

Inventor： PAUL AXEL DR ,  PETER TONNE DR ,  ROSKE ECKHARD ,  SIEGEL HARDO DR

IPC: C07C229/08 ,  C07C67/00 ,  C07C227/00 ,  C07C227/08 ,  C07C227/32