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. 23, 2025
Filed:
Feb. 11, 2022
Applicant:
Lohocla Research Corporation, Aurora, CO (US);
Inventors:
Ananya Sengupta, Schenectady, NY (US);
Sergiy Krasutsky, Princeton, MA (US);
Scott Tweedie, Albany, NY (US);
Gurusankar Ramamoorthy, Watervliet, NY (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 215/48 (2006.01);
U.S. Cl.
CPC ...
C07D 215/48 (2013.01);
Abstract
A method of preparing 5,7-dihalo-1,4-dihydro-4-oxoquinoline-2-carboxylic acid tosylate addition salts is provided, which involves direct conversion of esters of Formula V as described herein to acids of Formula VIII as described herein. Tosylate addition salts of Formula IX as described herein are then prepared from the acids of Formula VIII.