Expedient Synthesis of Large-Ring<i>trans</i>-Enamide Macrolides by CuI-Mediated Intramolecular Coupling of Vinyl Iodide with Amide: Total Synthesis of Palmyrolide A
作者:Jhillu Singh Yadav、Borra Suresh、Pabbaraja Srihari
DOI:10.1002/ejoc.201600325
日期:2016.5
An efficient and improved procedure for copper-catalyzed coupling of vinyl iodide with amide in an intramolecular fashion is described. The protocol utilizes a combination of copper iodide, CsF and (±)-1,2-diaminocyclohexane as ligand. The vinyl iodide couples efficiently with the amide to generate an enamide macrolide without any alteration in the double -bond geometry. The developed method was applied
描述了一种以分子内方式将乙烯基碘与酰胺进行铜催化偶联的有效且改进的方法。该协议使用碘化铜、CsF 和 (±)-1,2-二氨基环己烷作为配体的组合。乙烯基碘与酰胺有效偶联以生成烯酰胺大环内酯,而双键几何结构没有任何改变。所开发的方法已应用于几种大环烯酰胺大环内酯的合成,以及天然产物棕榈内酯A和同系sanctolide A的全合成。