The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1996
Filed:
Oct. 06, 1994
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
562408 ; 562433 ; 562456 ; 562458 ; 562493 ;
Abstract
The present invention relates to a process for the preparation of 5-fluoroanthranilic acid, which comprises reacting 5-fluoro-2-bromotoluene in the presence of a catalyst and of an acidic solvent, with oxygen or an oxygen-containing gas at from 80.degree. to 220.degree. C., separating off the 5-fluoro-2-bromobenzoic acid formed and reacting it with ammonia at from 70.degree. to 180.degree. C.