Merging Photoredox PCET with Ni-Catalyzed Cross-Coupling: Cascade Amidoarylation of Unactivated Olefins
作者:Shuai Zheng、Álvaro Gutiérrez-Bonet、Gary A. Molander
DOI:10.1016/j.chempr.2018.11.014
日期:2019.2
integration of amidyl radicals with cross-coupling chemistry opens new avenues for reaction design. However, the lack of efficient methods for the generation of such radical species has prevented many such transformations from being brought to fruition. Herein, the amidoarylation of unactivated olefins by a cascade process from non-functionalized amides is reported by merging, for the first time, photoredox
酰胺基自由基与交叉偶联化学的整合为反应设计开辟了新途径。然而,缺乏产生此类自由基物种的有效方法阻止了许多此类转化的实现。在本文中,首次报道了通过光氧化还原质子偶联电子转移(PCET)与镍催化的合并,通过级联法从非官能化酰胺进行的未活化烯烃的酰胺化。这项新技术可以在可见光催化剂和镍催化剂的存在下,从烯基酰胺,芳基和杂芳基卤化物中获得一系列包含特权吡咯烷酮核心的复杂分子。值得注意的是,该反应不限于酰胺-也可以使用氨基甲酸酯和脲。机理研究,