Facile synthesis of δ-ketoesters via formal two-carbon insertion into β-ketoesters
作者:Yan Jiang、Song Xi、Qi Wang、Lin Fu、Ling He、Zhen Wang、Min Zhang
DOI:10.1016/j.tetlet.2022.153656
日期:2022.3
A formal two-carbon insertion into β-ketoesters with vinylmetal has been developed for the rapid synthesis of δ-ketoesters. This method features high efficiency, simple operation, and mild conditions without the usage of bases and catalysts. The reaction is postulated to proceed via a tandem process involving nucleophilic addition of vinylmetal to ketone, retro-aldol reaction to give an enolate anion
已经开发了一种正式的用乙烯基金属将双碳插入到β-酮酯中的方法,用于快速合成δ-酮酯。该方法具有效率高、操作简单、条件温和等特点,无需使用碱和催化剂。假设该反应通过串联过程进行,包括乙烯基金属与酮的亲核加成、逆醛醇反应产生烯醇化物阴离子和烯酮,最后是这两种中间体的迈克尔加成。