发明授权
US4962233A Process for preparing racemic dihalovinylcyclopropane carboxylic acid
halides
失效
制备外消旋二卤乙烯基环丙烷羧酸卤化物的方法
- 专利标题: Process for preparing racemic dihalovinylcyclopropane carboxylic acid halides
- 专利标题(中): 制备外消旋二卤乙烯基环丙烷羧酸卤化物的方法
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申请号: US349056申请日: 1989-05-09
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公开(公告)号: US4962233A公开(公告)日: 1990-10-09
- 发明人: Koji Hagiya , Gohfu Suzukamo , Masami Fukao , Hiroko Sakane
- 申请人: Koji Hagiya , Gohfu Suzukamo , Masami Fukao , Hiroko Sakane
- 申请人地址: JPX Osaka
- 专利权人: Sumitomo Chemical Co., Ltd.
- 当前专利权人: Sumitomo Chemical Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX63-122843 19880519; JPX63-128627 19880526; JPX63-175652 19880713; JPX63-175653 19880713; JPX63-199156 19880809
- 主分类号: C07C51/487
- IPC分类号: C07C51/487
摘要:
Racemic dihalovinylcyclopropane carboxylic acid halides, which are intermediates of such insecticides as permethrin, cypermethrin etc., are prepared by allowing phosphorus iodides, silicon iodides or boron iodides to react with optically active dihalovinylcyclopropane carboxylic acid halides of the formula: ##STR1## wherein X and Y stand for halogen atoms and the mark * indicates an asymmetric carbon atom.
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