Remote C−H Activation of Quinolines through Copper-Catalyzed Radical Cross-Coupling
作者:Jun Xu、Chao Shen、Xiaolei Zhu、Pengfei Zhang、Manjaly J. Ajitha、Kuo-Wei Huang、Zhongfu An、Xiaogang Liu
DOI:10.1002/asia.201501407
日期:2016.3.18
through copper‐catalyzed sulfonylation under mild conditions. Our strategy shows high conversion efficiency, a broad substrate scope, and good toleration with different functional groups. Furthermore, our mechanistic investigations suggest that a single‐electron‐transfer process plays a vital role in generating sulfonyl radicals and subsequently initiating C−S cross‐coupling. Importantly, our copper‐catalyzed
在碳氢(CH)功能化反应中实现位点选择性是有机化学中的巨大挑战。本文中,我们报道了一种在温和条件下通过铜催化的磺酰化激活8-氨基喹啉C5位置远程C H键的新颖方法。我们的策略显示出高转化效率,广泛的底物范围以及对不同官能团的良好耐受性。此外,我们的机理研究表明,单电子转移过程在产生磺酰基自由基并随后引发CS交叉偶联中起着至关重要的作用。重要的是,我们的铜催化远程功能化协议可以扩展为各种化学键的构建,包括C-O,C-Br,C-N,CC和C-I。