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:
Oct. 18, 1983
Filed:
Oct. 16, 1981
Applicant:
Inventors:
Muneaki Takase, Oizumi, JP;
Tadahiro Nakamura, Niiza, JP;
Kazuo Kamiya, Higashikurume, JP;
Toshiyuki Takezawa, Urawa, JP;
Hiroaki Yamazaki, Fujishiro, JP;
Takashi Iwaki, Tokyo, JP;
Assignee:
Zenyaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562456 ;
Abstract
There is provided a process for production of o-(2,6-dichloroanilino)phenylacetic acid or a salt thereof by reacting o-chlorophenylacetic acid or an alkali metal salt thereof with 2,6-dichloroaniline in the presence of a base and at least 0.5 mol of a copper catalyst per mol of o-chlorophenylacetic acid in a polar solvent.