BI-OAc-Accelerated C3-H Alkylation of Quinoxalin-2(1H)-ones under Visible-Light Irradiation

Xiang-Kui He, Juan Lu, Ai-Jun Zhang, Qing-Qing Zhang, Guo-Yong Xu and Jun Xuan*

*College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, People’s Republic of China, Email: xuanjunahu.edu.cn

X.-K. He, J. Lu, A.-J. Zhang, Q.-Q. Zhang, G.-Y. Xu, J. Xuan, Org. Lett., 2020, 22, 5984-5989.

DOI: 10.1021/acs.orglett.0c02080

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Abstract

An efficient, photoredox-catalyst-free radical alkylation of quinoxalin-2(1H)-ones with photoexcited 4-alkyl-1,4-dihydropyridines (R-DHPs) as alkyl radical precursors and acetoxybenziodoxole (BI-OAc) as an electron acceptor offers benign reaction conditions and good functional group compatibility.

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Key Words

Quinoxalin-2(1H)-ones, Photochemistry

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ID: J54-Y2020