公开(公告)号：HU186861B

公开(公告)日：1985-10-28

申请号：HU129082

申请日：1982-04-23

Applicant: BASF AG

Inventor： RUCHARDT CHRISTOPH ,  JAEHME JOACHIM ,  SALZ ULRICH

IPC: C07C67/46 ,  C07B31/00 ,  C07B41/08 ,  C07B53/00 ,  C07C27/00 ,  C07C27/02 ,  C07C51/09 ,  C07C57/30 ,  C07C57/58 ,  C07C59/64 ,  C07C59/68 ,  C07C67/00 ,  C07C69/612 ,  C07C69/635 ,  C07C69/708 ,  C07C69/712

Abstract: Optically active carboxylic acids I where R1 is an organic radical which is linked to the asymmetric C' atom via a carbon atom and R2 is one of the radicals R1 (but not the same radical), halogen or an organic radical which is bonded to the asymmetric C' atom via an oxygen atom, are prepared by reacting a ketene II II with an alcohol in a homogeneous liquid phase in the presence of a tertiary amine III and then converting the resulting ester into the acid, using an optically active alcohol IV.