公开(公告)号：DE4408957A1

公开(公告)日：1995-09-21

申请号：DE4408957

申请日：1994-03-17

Applicant: BASF AG

Inventor： STRECKER BEATE DR ,  BURAK THOMAS ,  OFTRING ALFRED DR ,  HERTEL DIETER ,  VOGT VOLKER DR ,  SCHUH GEORG

IPC: C07C231/02 ,  C07C233/47 ,  C07C233/49 ,  C07C303/22 ,  C07C309/15 ,  C07C309/32 ,  C07C229/12 ,  C07C227/18 ,  C07C227/38 ,  C07C303/32 ,  C07C309/18

Abstract: Prepn. of N-acylamino-carboxylic or sulphonic acids (I) or their alkali metal salts comprises (a) preparing a suspension of a solid, anhydrous alkali metal salt (II) of an aminocarboxylic or aminosulphonic acid in an alkyl carboxylate ester (III); (b) carrying out reaction to prepare an alkali metal salt of (I), by adding a catalytic amt. of strong base; and opt. (c) converting the salt into free (I) by addn. of acid.