公开(公告)号：MY136283A

公开(公告)日：2008-09-30

申请号：MYPI20033890

申请日：2003-10-13

Applicant: BASF AG

Inventor： PASTRE J XD RG DR ,  EXNER KAI MICHAEL DR ,  STUER WOLFRAM DR ,  XDFLER ELKE GEI ,  MACHHAMMER OTTO DR

IPC: C07C51/09 ,  C07C51/54 ,  C07C51/56

Abstract: PROCESS FOR THE JOINT PREPARATION OF @(I) FORMIC ACID (III);(II) A CARBOXYLIC ACID HAVING AT LEAST TWO CARBON ATOMS (II) AND/OR DERIVATIVES THEREOF; AND (III) A CARBOXYLIC ANHYDRIDE (VII),WHICH COMPRISES (A) TRANSESTERIFYING A FORMIC ESTER (I) WITH A CARBOXYLIC ACID HAVING AT LEAST TWO CARBON ATOMS (II) TO FORM FORMIC ACID (III) AND THE CORRESPONDING CARBOXYLIC ESTER (IV);(B) CARBONYLATING AT LEAST PART OF THE CARBOXYLIC ESTER (IV) FORMED IN STEP (A) TO FORM THE CORRESPONDING CARBOXYLIC ANHYDRIDE (V); AND(C) TRANSANHYDRIDING AT LEAST PART OF THE CARBOXYLIC ANHYDRIDE (V) FORMED IN STEP (B) WITH A CARBOXYLIC ACID (VI) TO FORM A CARBOXYLIC ANHYDRIDE (VII) AND THE CARBOXYLIC ACID (II).