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. 29, 2010
Filed:
Jun. 17, 2004
Applicants:
Shailendra Kumar Singh, Uttar Pradesh, IN;
Ashutosh Agarwal, Uttar Pradesh, IN;
Inventors:
Shailendra Kumar Singh, Uttar Pradesh, IN;
Ashutosh Agarwal, Uttar Pradesh, IN;
Assignee:
Jubilant Organosys Limited, Uttar Pradesh, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 213/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention discloses an improved process for producing an intermediate to produce large quantity of 2-(Phenyl methyl thio)-3-pyridine carboxylic acid. The process comprises reacting 2-chloro-3-cyanopyridine with benzyl mercaptan in presence of a base and an aprotic solvent. The resulting intermediate 2-(phenyl methyl thio)-3-cyanopyridine is hydrolyzed in presence of a base in an autoclave and isolated under acidic condition to get the desired product.