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US3943167A Process for preparing trans-chrysanthemic acid 失效
制备反式菊酸的方法

Process for preparing trans-chrysanthemic acid
摘要:
A process for preparing trans-chrysanthemic acid which comprises reacting a mixture of alkyl trans-chrysanthemate and alkyl cis-chrysanthemate with an equimolar amount or less of an alkali with respect to the trans-isomer in the presence of water or an alcohol to hydrolyze the trans-isomer predominantly and separating the hydrolyzed trans-isomer from the unreacted cis-isomer.
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