发明名称 |
Method for the resolution of racemic 2-(p-difluoromethoxyphenyl)-3-methylbutyric acid |
摘要 |
A method for the resolution of racemic 2-(p-difluoromethoxyphenyl)-3-methylbutyric acid into its optically active components. The method utilizes salts prepared by reacting the racemic acid with optically active amines and recovers the dextrorotatory isomer. The present invention also relates to insecticidal pyrethroids prepared from (+)-2-(p-difluoromethoxyphenyl)-3-methylbutyric acid.
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申请公布号 |
US4454344(A) |
申请公布日期 |
1984.06.12 |
申请号 |
US19820410805 |
申请日期 |
1982.08.23 |
申请人 |
AMERICAN CYANAMID COMPANY |
发明人 |
KAMESWARAN, VENKATARAMAN |
分类号 |
C07C69/734;C07B31/00;C07B57/00;C07C41/00;C07C41/01;C07C41/09;C07C43/20;C07C43/225;C07C43/23;C07C51/487;C07C59/64;C07C67/00;C07C67/30;C07C201/12;C07C205/37;C07C253/00;C07C253/30;C07C255/37;(IPC1-7):C07B19/00 |
主分类号 |
C07C69/734 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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