Time-resolved EPR revealed C(sp3)-H activation through a photo-enhanced phthalimide- N-oxyl (PINO) radical

Xiao-Hui Liu; Hai-Yang Yu; Jia-Ying Huang; Xian-Tai Zhou; Can Xue; Hong-Bing Ji

doi:10.1039/d2cc05906a

Time-resolved EPR revealed C(sp³)-H activation through a photo-enhanced phthalimide- N-oxyl (PINO) radical

Chem Commun (Camb). 2022 Dec 22;59(2):243-246. doi: 10.1039/d2cc05906a.

Authors

Xiao-Hui Liu¹, Hai-Yang Yu¹, Jia-Ying Huang¹, Xian-Tai Zhou¹, Can Xue¹, Hong-Bing Ji^{2

3}

Affiliations

¹ Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China. zhouxtai@mail.sysu.edu.cn.
² Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China. jihb@mail.sysu.edu.cn.
³ Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, Guangdong, 516003, China.

PMID: 36503958
DOI: 10.1039/d2cc05906a

Abstract

The time-resolved electron paramagnetic resonance (EPR) technique under operando photochemical conditions as an efficient strategy to investigate the fast formation of abundant long-lived PINO radicals (t_1/2 = 204 s) and their activation of the C(sp³)-H process has been researched. This developed method offers a pathway for investigating the properties and tracking the transformations of radical species in the photoredox reaction process.