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:
Dec. 06, 1994
Filed:
Oct. 28, 1992
Applicant:
Inventors:
Nicholas A Cortese, Jr, Mercerville, NJ (US);
Henry L Strong, Somerset, NJ (US);
Assignee:
American Cyanamid Company, Wayne, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546320 ; 546319 ; 546250 ;
Abstract
There is provided an improved process for the preparation of substituted and unsubstituted 2,3-pyridinedicarboxylic acids in significantly enhanced yield by the nitric acid oxidation of the appropriately substituted quinoline precursor in the presence of a catalytic amount of Manganese.