Discovery of an Oxidative System for Radical Generation from Csp<sup>3</sup>–H Bonds: A Synthesis of Functionalized Oxindoles
作者:Ming-Zhong Zhang、Wan-Ting Li、Yuan-Yuan Li、Qi Wang、Chong Li、Yan-Hao Liu、Jin-Xing Yin、Xin Yang、Huisheng Huang、Tieqiao Chen
DOI:10.1021/acs.joc.1c02032
日期:2021.11.5
cycloalkanes, and haloalkanes were selectively activated to generate the corresponding C-centered radicals, which could be further captured by N-arylacrylamides to deliver the valuable functionalized oxindoles. Good functional group tolerance was demonstrated. The useful polycarbonyl compound and esters were also modified with the strategy. Moreover, the combination can also be applied to the practical coupling
开发了一种在无金属和无有机过氧化物条件下从 Csp 3 -H 键生成自由基的简便且通用的方法。通过结合安全的过硫酸盐和低毒的季铵盐,多种 Csp 3 -H 化合物,包括醚、(杂)芳香族/脂肪族酮、烷基苯、烷基杂环、环烷烃和卤代烷烃被选择性地激活以生成相应的以 C 为中心的化合物。自由基,可以被N进一步捕获-芳基丙烯酰胺以提供有价值的官能化羟吲哚。证明了良好的官能团耐受性。有用的多羰基化合物和酯也用该策略改性。此外,该组合还可应用于简单卤代烷烃与N-羟基邻苯二甲酰亚胺(NHPI)之间的实际偶联。