Photoredox-mediated Minisci C–H alkylation of N-heteroarenes using boronic acids and hypervalent iodine
作者:Guo-Xing Li、Christian A. Morales-Rivera、Yaxin Wang、Fang Gao、Gang He、Peng Liu、Gong Chen
DOI:10.1039/c6sc02653b
日期:——
A photoredox-mediated Minisci C–H alkylation reaction of N-heteroarenes with alkyl boronic acids is reported. A broad range of primary and secondary alkyl groups can be efficiently incorporated into various N-heteroarenes using [Ru(bpy)3]Cl2 as photocatalyst and acetoxybenziodoxole as oxidant under mild conditions. The reaction exhibits excellent substrate scope and functional group tolerance, and
报道了N-杂芳烃与烷基硼酸的光氧化还原介导的 Minisci C-H 烷基化反应。在温和条件下,使用[Ru(bpy) 3 ]Cl 2作为光催化剂和乙酰氧基苯并氧杂环戊烯作为氧化剂,可以将广泛的伯烷基和仲烷基有效地引入各种N-杂芳烃中。该反应表现出优异的底物范围和官能团耐受性,为复杂底物的后期功能化提供了广泛适用的方法。机理实验和计算研究表明,分子内稳定的邻碘苯甲酰氧基自由基中间体可能在该反应体系中发挥关键作用。