Herein, a selective and efficient CO2-mediated Z to E isomerization of enamides is reported. Notably, CO2 acts as a promoter to form the key reaction intermediate. This protocol provides a novel method for the selective isomerization of enamides under mild conditions with moderate to excellent yields. The method exhibits a broad substrate scope, including late-stage modification of biorelevant molecules
在此,报道了烯酰胺的选择性且有效的CO 2介导的Z至E异构化。值得注意的是,CO 2充当形成关键反应中间体的促进剂。该方案提供了一种在温和条件下选择性异构化烯酰胺的新方法,具有中等至优异的产率。该方法具有广泛的底物范围,包括生物相关分子的后期修饰。通过循环伏安法 (CV) 和密度泛函理论 (DFT) 计算得出的机理见解提供了证据,证明中间体通过非常规的 C 中心模式促进了反应。
A Novel Route to N-Styrylamides
作者:A. R. Katritzky、A. V. Ignatchenko、H. Lang
DOI:10.1080/00397919508012683
日期:1995.4
A general synthesis of N-styrylamides starting from amides and phenylacetaldehyde is described. Condensation of the amide, aldehyde and benzotriazole affords N-(1-benzotriazol-1-yl-2-phenylethyl)amides 2 from which the benzotriazole molecule is smoothly eliminated.