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:
Nov. 08, 1983
Filed:
Jan. 20, 1982
Applicant:
Inventors:
Richard A Raphael, Loughborough, GB;
Stephen C Eyley, Loughborough, GB;
Stephen C Coltman, Loughborough, GB;
Assignee:
Fisons Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ;
U.S. Cl.
CPC ...
564443 ; 549402 ;
Abstract
There is described a process for the production of a 1,4-dihydro-4-oxo-quinoline-2-carboxylic acid, or a salt, ester or amide thereof, which comprises cyclization of a corresponding 2-aminobenzoyl pyruvic acid or an ester thereof, and if desired or necessary converting the resulting product to an appropriate salt, ester or amide thereof, or vice versa.