作者:Wei Xiao、Shengyun Liu、Yuhui Lin、Xiaoyu Zhou、Jie Wu
DOI:10.1021/acs.orglett.4c00685
日期:2024.4.19
Herein, we report an arenethiolate-catalyzed 1,5-HAT of aryl halides to obtain γ-spirolactams through a SET reduction/intramolecular 1,5-HAT/cyclization/HAT process. This protocol features metal-free conditions and a broad substrate scope, furnishing the γ-spirolactams in moderate to excellent yields. Notably, aryl bromides, aryl chlorides and even aryl fluorides are well tolerated in this transformation
γ-螺内酰胺是一种特殊的结构单元,存在于多种天然产物和生物活性化合物中。在此,我们报道了芳烃硫醇催化芳基卤化物的1,5-HAT,通过SET还原/分子内1,5-HAT/环化/HAT过程获得γ-螺内酰胺。该方案具有无金属条件和广泛的底物范围,以中等至优异的产率提供 γ-螺内酰胺。值得注意的是,芳基溴、芳基氯甚至芳基氟在这种转化中具有良好的耐受性。基于DFT计算提出了芳烃硫醇盐作为SET催化剂的机理。