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

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

Xiao-Hui Liu,^a Hai-Yang Yu,^a Jia-Ying Huang,^a Xian-Tai Zhou,

*^a Can Xue

^a and Hong-Bing Ji

*^bc

Author affiliations

* Corresponding authors

^a Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, China
E-mail: zhouxtai@mail.sysu.edu.cn

^b Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou, China
E-mail: jihb@mail.sysu.edu.cn

^c Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, Guangdong, China

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.

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Article information

DOI: https://doi.org/10.1039/D2CC05906A
Article type: Communication
Submitted: 31 Oct 2022
Accepted: 05 Dec 2022
First published: 06 Dec 2022

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Chem. Commun., 2023,59, 243-246

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

X. Liu, H. Yu, J. Huang, X. Zhou, C. Xue and H. Ji, Chem. Commun., 2023, 59, 243 DOI: 10.1039/D2CC05906A

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