发明名称 |
1S to 1R Epimerizations of pyrethroid intermediates |
摘要 |
This invention relates to a process for preparing certain isomers of 2,2-dimethyl-3-(2,2-disubstitutedvinyl)cyclopropanecarboxylic acid or derivatives thereof. More specifically it relates to the epimerization of the 1S cyclopropanecarboxylic acid and its derivatives into the corresponding 1R isomers.
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申请公布号 |
US5840958(A) |
申请公布日期 |
1998.11.24 |
申请号 |
US19970950819 |
申请日期 |
1997.10.15 |
申请人 |
FMC CORPORATION |
发明人 |
MONTGOMERY, RONALD E.;SMELTZ, LELAND A. |
分类号 |
C07C51/62;C07C67/333;(IPC1-7):C07C51/353 |
主分类号 |
C07C51/62 |
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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