Site-Selective Remote Radical C−H Functionalization of Unactivated C−H Bonds in Amides Using Sulfone Reagents
作者:Yong Xia、Lin Wang、Armido Studer
DOI:10.1002/anie.201807455
日期:2018.9.24
A general and practical strategy for remote site‐selective functionalization of unactivated aliphatic C−H bonds in various amides by radical chemistry is introduced. C−H bond functionalization is achieved by using the readily installed N‐allylsulfonyl moiety as an N‐radical precursor. The in situ generated N‐radical engages in intramolecular 1,5‐hydrogen atom transfer to generate a translocated C radical
介绍了一种通过自由基化学方法对各种酰胺中未活化的脂肪族CH键进行远程位点选择性官能化的通用和实用策略。通过使用易于安装的N-烯丙基磺酰基部分作为N-自由基前体,可以实现C-H键的功能化。原位生成的N自由基参与分子内1,5-氢原子转移,生成易位的C基团,随后将其捕获在各种砜试剂中,以提供相应的CHH官能化酰胺。该方法的通用性由成功的远程C-N记录3,C-CL,C-BR,C-SCF 3,C-SPh上,和C-C键的形成。未活化的叔和仲CH键以及活化的CH主键可以通过此方法轻松地进行功能化。