公开(公告)号：HU198170B

公开(公告)日：1989-08-28

申请号：HU327187

申请日：1987-07-17

Applicant: BASF AG

Inventor： DECKER MARTIN ,  NEUMAYR FRANZ

IPC: B01J31/00 ,  C07C51/00 ,  C07B61/00 ,  C07C51/60 ,  C07C53/50 ,  C07C67/00

Abstract: Chlorocarboxylic acid chlorides of the formula I where R is H or alkyl and n is an integer from 2 to 4, are prepared by reacting a lactone of the formula II with phosgene at elevated temperatures and in the presence of a quaternary ammonium salt.

公开(公告)号：DE3660811D1

公开(公告)日：1988-11-03

申请号：DE3660811

申请日：1986-10-27

Applicant: BASF AG

Inventor： ENGELBACH HEINZ ,  KROKOSZINSKI ROLAND ,  FRANZISCHKA WOLFGANG ,  DECKER MARTIN

IPC: C07B61/00 ,  B01J23/22 ,  C07C67/00 ,  C07C253/00 ,  C07C253/28 ,  C07C255/50 ,  C07C255/51 ,  C07C121/56 ,  C07C120/14

Abstract: Aromatic nitriles, in particular phthalodinitriles, are prepared from an appropriately alkyl-substituted aromatic hydrocarbon by catalytic oxidation with oxygen or an oxygen-containing gas in the presence of ammonia at elevated temperatures in the vapor phase, in the presence of a catalyst which contains from 2 to 10% by weight of vanadium(V) oxide, from 1 to 10% by weight of antimony(III) oxide, from 0.02 to 2% by weight of an alkali metal oxide and alumina, by a process in which from 0.01 to 1.0% by weight of an alkaline earth metal, or of a compound of an alkaline earth metal, in particular barium or a barium compound, is added to the catalyst.