Identification of Alkoxy Radicals as Hydrogen Atom Transfer Agents in Ce-Catalyzed C–H Functionalization

• Published in: Journal of the American Chemical Society Vol. 145; no. 1; pp. 359 - 376
• Main Authors: An, Qing, Xing, Yang-Yang, Pu, Ruihua, Jia, Menghui, Chen, Yuegang, Hu, Anhua, Zhang, Shuo-Qing, Yu, Na, Du, Jianbo, Zhang, Yanxia, Chen, Jinquan, Liu, Weimin, Hong, Xin, Zuo, Zhiwei
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 11.01.2023
• Subjects: absorption; alcohols; carbon-hydrogen bond activation; Catalysis; catalytic activity; Chlorine; density functional theory; electron paramagnetic resonance spectroscopy; Ethanol; homolytic cleavage; hydrogen; Hydrogen - chemistry; Kinetics; Ligands; Metals; regioselectivity; X-ray diffraction

The intermediacy of alkoxy radicals in cerium-catalyzed C–H functionalization via H-atom abstraction has been unambiguously confirmed. Catalytically relevant Ce­(IV)–alkoxide complexes have been synthesized and characterized by X-ray diffraction. Operando electron paramagnetic resonance and transien...