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[Chlorogenic acid content comparison of different processed products of Ilex hainanensis Merr]

Yong Chen1, Yaohua Li, Zhen Xie

  • 1Guangxi College of Traditional Chinese Medicine, Nanning 530001.

Zhong Yao Cai = Zhongyaocai = Journal of Chinese Medicinal Materials
|June 29, 2005
PubMed
Abstract

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Lithium dialkyl cuprate, also known as Gilman reagents, selectively reduces acid halides to ketones. The acid chloride is treated with Gilman reagent at −78 °C in the presence of ether solution to produce a ketone in good yield.
As shown below, the mechanism proceeds in two steps. First, one of the alkyl groups of the reagent acts as a nucleophile and attacks the acyl carbon of the acid chloride to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen double...