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:
Aug. 31, 2021
Filed:
Jan. 29, 2018
Applicant:
Otsuka Pharmaceutical Co., Ltd., Tokyo, JP;
Inventors:
Petr Novak, Uvaly, CZ;
Petr Zahradnik, Chomutov, CZ;
Jiri Tauchman, Prague, CZ;
Jan Koci, Prelouc, CZ;
Antonin Sturc, Prague, CZ;
Assignee:
OTSUKA PHARMACEUTICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 233/92 (2006.01);
U.S. Cl.
CPC ...
C07D 233/92 (2013.01);
Abstract
An improved process for preparing 2-chloro-4-nitroimidazole derivatives which are useful intermediates in the preparation of an anti-tuberculosis drug is provided. The process may comprise the step of chlorinating nitroimidazoles with a chlorinating agent and an activating agent to give 2-chloro-4-nitroimidazole derivatives.