公开(公告)号：BR9508551A

公开(公告)日：1997-10-28

申请号：BR9508551

申请日：1995-07-29

Applicant: BASF AG

Inventor： PLATH PETER ,  RANG HARALD ,  WESPHALEN KARL OTTO ,  GERBER MATTHIAS ,  WALTER HELMUT

IPC: C07D277/68 ,  A01N43/80 ,  A01P13/00 ,  C07B41/08 ,  C07D275/06

Abstract: PCT No. PCT/EP95/03022 Sec. 371 Date Feb. 3, 1997 Sec. 102(e) Date Feb. 3, 1997 PCT Filed Jul. 29, 1995 PCT Pub. No. WO96/05184 PCT Pub. Date Feb. 22, 1996Saccharincarboxylic acids and -carboxylic acid esters of the formula I I where the substituents have the following meanings: L and M are hydrogen, alkyl, alkoxy, alkylthio, chlorine, cyano, alkylsulfonyl, nitro or trifluoromethyl; Z is hydrogen, alkyl, cycloalkyl, alkyl, aryl or aralkyl; R is H or C1-C6-alkyl, are prepared by reacting corresponding bromo- or iodo-substituted saccharin derivatives of the formula II II where L, M and Z have the abovementioned meanings, or if Z NOTEQUAL H, compounds of the formula III III in the presence of a palladium, nickel, cobalt or rhodium transition metal catalyst and of a base with carbon monoxide and water or a C1-C6-alcohol under elevated pressure.