Title:
A SUCCESSIVE PREPARATION METHOD OF 3-ISOTHIAZOLONE DERIVATES AND THEIR INTERMEDIATES
Document Type and Number:
WIPO Patent Application WO/2009/056069
Kind Code:
A1
Abstract:
A successive preparation method of the 3-isothiazolone derivates and their
intermediates. This method includes four successive steps, that is sulfuration,
purification, amination and chlorination. Comparing with the intermission
method disclosed in the prior arts, the present method requires less production
equipment, can reduce the energy consumption and simplify the operation. So
this method is very suitable for large scaled production.
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Inventors:
JIN YUECHUN (CN)
LI KEZHONG (CN)
LU XUETING (CN)
ZHANG XIAOLIN (CN)
WANG YU (CN)
ZHOU SHUAILIN (CN)
LI CHAO (CN)
LI KEZHONG (CN)
LU XUETING (CN)
ZHANG XIAOLIN (CN)
WANG YU (CN)
ZHOU SHUAILIN (CN)
LI CHAO (CN)
Application Number:
PCT/CN2008/072831
Publication Date:
May 07, 2009
Filing Date:
October 24, 2008
Export Citation:
Assignee:
BEIJING TIANQING CHEMICALS CO (CN)
JIN YUECHUN (CN)
LI KEZHONG (CN)
LU XUETING (CN)
ZHANG XIAOLIN (CN)
WANG YU (CN)
ZHOU SHUAILIN (CN)
LI CHAO (CN)
JIN YUECHUN (CN)
LI KEZHONG (CN)
LU XUETING (CN)
ZHANG XIAOLIN (CN)
WANG YU (CN)
ZHOU SHUAILIN (CN)
LI CHAO (CN)
International Classes:
C07C321/04; C07D275/03; C07C323/03
Foreign References:
| CN101050203A | 2007-10-10 | |||
| US4052440A | 1977-10-04 |
Other References:
SONG DONGMING ET AL.: "STUDY ON THE SYNTHESIS OF 5-CHLORO-2-METHYL-ISOTHIAZOLONE-3", FINE PETROCHEMICAL INDUSTRY, no. 4, 1995, pages 52 - 55
See also references of EP 2216331A4
See also references of EP 2216331A4
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (19B Tower A, InDo Building,No. 48A Zhichun Road,Haidian District, Beijing 8, CN)
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