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. 05, 2007
Filed:
Feb. 05, 2003
Applicants:
Scott Mason Duncan, Madison, WI (US);
Augustine Tobi Osuma, Canton, MI (US);
Sylvain Daigneault, Laval-sur-le-Lac, CA;
Michel Bernatchez, Montreal, CA;
Inventors:
Scott Mason Duncan, Madison, WI (US);
Augustine Tobi Osuma, Canton, MI (US);
Sylvain Daigneault, Laval-sur-le-Lac, CA;
Michel Bernatchez, Montreal, CA;
Assignee:
Wyeth, Madison, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 231/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine.