Authors
Zhixiong Ruan, Zhixing Huang, Zhongnan Xu, Shaogao Zeng, Pengju Feng, Ping-Hua Sun
Publication date
2021/5
Journal
Science China Chemistry
Volume
64
Pages
800-807
Publisher
Science China Press
Description
The installation of azoles via C–H/N–H cross-coupling is significantly underdeveloped, particularly in benzylic C–H azolation due to the requirement for external chemical oxidants and the challenge in controlling the site- and chemo-selectivity. Herein, a late-stage azolation of benzylic C‒H bonds enabled by electrooxidation is described, which proceeds in an undivided cell under mild, catalyst- and chemical-oxidant-free reaction conditions. The strategy empowers the C‒H azolation on primary, secondary, and even challenging tertiary benzylic positions selectively. The remarkable synthetic utility of our approach is highlighted by its easy scalability without overoxidation of products and ample scope with valuable functional groups. The approach can be directly used to install benzyl and azole motifs on highly functionalized drug molecules.
Total citations
202120222023202410201812
Scholar articles
Z Ruan, Z Huang, Z Xu, S Zeng, P Feng, PH Sun - Science China Chemistry, 2021