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. 09, 1999
Filed:
Feb. 02, 1998
Applicant:
Inventors:
Yee-Fung Lu, Scarborough, CA;
James L Tindall, Goodwood, CA;
Assignee:
Torcan Chemical Ltd., Aurora, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548205 ;
Abstract
Nizatidine is prepared by reacting N-[2-[[[2-(hydroxymethyl)-4-thiazolyl]methyl]thio]ethyl]-N'-methyl-2-nitro -1,1-ethenediamine, with an aryl- or tert.alkyl-sulfonyl halide in the presence of a tertiary amine base and a sulfonation catalyst to form the corresponding sulfonate ester, reacting the sulfonate ester so formed with an excess of dimethylamine, and recovering the nizatidine so formed.