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:
Aug. 11, 1981
Filed:
Aug. 07, 1979
Applicant:
Inventor:
Fujio Nohara, Kamiichi, JP;
Assignee:
Ikeda Mohando Co., Ltd., Toyama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07D / ;
U.S. Cl.
CPC ...
544165 ; 564163 ; 564168 ; 562456 ; 546226 ; 544391 ; 2603 / ; 2605 / ;
Abstract
Disclosed is a process for the preparation of o-(2,6-dichloroanilino)phenylacetic acid (Diclofenac) or its pharmacologically acceptable acid addition salt, which comprises hydrolyzing an N,N-disubstituted-o-(2,6-dichloroanilino)phenylacetamide derivative with an alkali. Also a novel intermediate for use in the preparation of Diclofenac, that is, an N,N-disubstituted-o-halogenophenylacetamide in which the halogen is iodine or bromine, is disclosed.