Title:
PROCESS FOR PRODUCTION OF 2-CHLORO-4-NITROIMIDAZOLE DERIVATIVES
Document Type and Number:
WIPO Patent Application WO/2019/146113
Kind Code:
A1
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.
Inventors:
NOVAK PETR (CZ)
ZAHRADNIK PETR (CZ)
TAUCHMAN JIRI (CZ)
KOCI JAN (CZ)
STURC ANTONIN (CZ)
ZAHRADNIK PETR (CZ)
TAUCHMAN JIRI (CZ)
KOCI JAN (CZ)
STURC ANTONIN (CZ)
Application Number:
PCT/JP2018/002759
Publication Date:
August 01, 2019
Filing Date:
January 29, 2018
Export Citation:
Assignee:
OTSUKA PHARMA CO LTD (JP)
International Classes:
C07D233/92
Domestic Patent References:
| WO2005077913A1 | 2005-08-25 | |||
| WO2010021409A1 | 2010-02-25 | |||
| WO2006035960A2 | 2006-04-06 | |||
| WO2010143007A1 | 2010-12-16 | |||
| WO2010021409A1 | 2010-02-25 | |||
| WO2006035960A2 | 2006-04-06 |
Foreign References:
| CN103396369B | 2016-03-23 | |||
| CN103396369A | 2013-11-20 | |||
| US20070161802A1 | 2007-07-12 | |||
| US20070161802A1 | 2007-07-12 |
Other References:
POLISH JOURNAL OF CHEMISTRY, vol. 56, 1982, pages 1261 - 1272
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
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