公开(公告)号：US3923838A

公开(公告)日：1975-12-02

申请号：US41712273

申请日：1973-11-19

Applicant: BASF AG

Inventor： EILINGSFELD HEINZ ,  EISFELD WOLFGANG ,  PATSCH MANFRED ,  SCHAFFNER ERNST

IPC: C07D307/77 ,  C07C51/16 ,  C07C51/265 ,  C07C51/275 ,  C07C51/54 ,  C07C51/56 ,  C07C65/34 ,  C09B5/24 ,  C07D307/89 ,  C07C66/02

CPC classification number: C09B5/2418 ,  C07C51/16 ,  C07C51/265 ,  C07C51/275 ,  C07C51/54 ,  C07C51/56 ,  C07C65/34 ,  C07C66/02

Abstract: IN WHICH ONE X is chloro and the other X is hydrogen or each X is chloro; and WITH AIR OR OXYGEN OR WITH 10 TO 30% BY WEIGHT NITRIC ACID TO FORM THE CORRESPONDING CARBOXYLIC ACID FOLLOWED BY CYCLIZATION OF THE LATTER. 1-CHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE OR 1,4-DICHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE IS OBTAINED IN A GOOD YIELD. Each is a valuable dye intermediate.

A process for the production of an anthraquinone-2,3dicarboxylic anhydride bearing chlorine as a substituent in the 1-position or in the 1- and 4-positions by oxidation of a trimethyl compound of the formula:

Abstract translation: 通过氧化下式的三甲基化合物来生产在1-位或1-和4-位上带有氯作为取代基的蒽醌-2,3-二羧酸酐的方法：

公开(公告)号：US3655741A

公开(公告)日：1972-04-11

申请号：US3655741D

申请日：1970-06-23

Applicant: BASF AG

Inventor： STURM HANS JUERGEN ,  ARMBRUST HERBERT ,  NIENBURG HANS ,  EISFELD WOLFGANG

IPC: C07C51/31 ,  C07C65/20

CPC classification number: C07C51/313 ,  C07C65/34

Abstract: PRODUCTION OF O-BENZOYLBENZOIC ACID BY OXIDATION OF AN INDIAN WITH OXYGEN IN THE PRESENCE OF A CATALYST IN THE LIQUID PHASE. THE PRODUCT IS A STARTING MATERIAL FOR MANY SYNTHESES (SEE FOR EXAMPLE ULLMANNS ENCYKLOPADIE DER TECHNISCHEN CHEMIE, VOLUME 3, PAGES 660 ET SEQ.). IT IS OF PARTICULAR IMPORTANCE AS A STARTING MATERIAL FOR THE MANUFACTURE OF ANTHRAQUINONE.