发明申请
- 专利标题： FIPRONIL PRODUCTION PROCESS
-
申请号： US15408124申请日： 2017-01-17
-
公开(公告)号： US20170121290A1公开(公告)日： 2017-05-04
- 发明人: Anat Levin , Michael Grabarnick
- 申请人： Anat Levin , Michael Grabarnick
- 申请人地址： IL Beer Sheva
- 专利权人： ADAMA MAKHTESHIM LTD.
- 当前专利权人： ADAMA MAKHTESHIM LTD.
- 当前专利权人地址： IL Beer Sheva
- 主分类号： C07D231/44
- IPC分类号： C07D231/44
摘要：
An improved oxidation process for preparing 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylsulphinyl-pyrazole, of formula (I) is described. The process includes admixing 5-amino-3-cyano-1-(2, 6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylthiopyrazole of formula (II) with dichloroacetic acid and hydrogen peroxide in the presence of a strong acid.