• 专利标题: Process for preparing gamma-cyhalothrin
  • 申请号: US10546138
    申请日: 2004-02-23
  • 公开(公告)号: US20060148892A1
    公开(公告)日: 2006-07-06
  • 发明人: Stephen BrownBrian Scott
  • 申请人: Stephen BrownBrian Scott
  • 优先权: GB0304132.4 20030224
  • 国际申请: PCT/GB04/00726 WO 20040223
  • 主分类号: A01N37/34
  • IPC分类号: A01N37/34 C07C253/30
Process for preparing gamma-cyhalothrin
摘要:
A process for the preparation of gamma-cyhalothrin comprising steps of a) chlorinating 1R cis-Z 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylic acid to give 1R cis-Z 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylic acid chloride and b) esterifying 1R cis-Z 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylic acid chloride with the (S)-cyanohydrin of 3-phenoxy benzaldehyde (III).
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