photoredox alkylation of halopyridines using functionalized alkene and alkyne building blocks. Selective single-electron reduction of the halogenated pyridines provides the corresponding heteroaryl radicals, which undergo anti-Markovnikov addition to the alkene substrates. The system is shown to be mild and tolerant of a variety of alkene and alkyne subtypes. A combination of computational and experimental
我们报告了使用功能化烯烃和
炔烃构建块的卤代
吡啶的光氧化还原烷基化。卤化
吡啶的选择性单电子还原提供了相应的杂芳基,这些杂芳基与烯烃底物发生反马尔科夫尼科夫加成。该系统表现出温和且耐受各种烯烃和
炔烃亚型。计算和实验研究的结合支持涉及质子耦合电子转移的机制,然后是介质依赖性烯烃加成和由极性反转催化剂介导的快速氢原子转移。