公开(公告)号：AU2437600A

公开(公告)日：2000-08-07

申请号：AU2437600

申请日：2000-01-15

Applicant: BASF AG

Inventor： THYES MARCO ,  FALKENBERG WOLFGANG ,  SCHNEIDER ULRICH

IPC: B01D11/04 ,  A61K31/215 ,  A61P13/04 ,  A61P13/06 ,  C07C227/38 ,  C07C227/40 ,  C07C229/46 ,  C07C229/48

Abstract: A process for reducing the content of ethyl 3-dimethylamino-2-phenylpropionate in a solution, contaminated therewith, of ethyl 2-dimethylamino-1-phenyl-3-cyclohexene-1-carboxylate in a water-immiscible solvent, which comprises adding from 0.5 to 2.0 equivalents of a carboxylic acid per mole of ethyl 2-dimethylamino-1-phenyl-3-cyclohexene-1-carboxylate to this solution, and stirring this mixture at a temperature of from 50° C. to 100° C., is described.