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Preparation of more highly active carboxylic ester

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专利汇可以提供Preparation of more highly active carboxylic ester专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain the titled compound useful as an insecticide and acaricide, by inoculating a crystal of cis Y or trans Y into a solution of cis- or trans-cypermethrin, and depositing and separating the cis Y or trans Y form selectively.
CONSTITUTION: A solution of cis- and/or trans-cypermethrin (the compound of the formula) is inoculated with a crystal of an ester having the d-cis form on the acid side and the S form on the alcohol side, a crystal of an antipode thereof or a mixture thereof (cis Y) and/or an ester having the d-trans form on the acid side and the S form on the alcohol side and an antipode or a mixture thereof (trans Y) to deposit the cis Y and/or trans Y in the presence or absence of a basic catalyst respectively. The deposited cis Y or trans Y or both are separated from the mother liquor to afford the cis Y and/or trans Y form of the compound expressed by the formula.
COPYRIGHT: (C)1981,JPO&Japio,下面是Preparation of more highly active carboxylic ester专利的具体信息内容。

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