Electrosynthesis of 2-Substituted Benzoxazoles via Intramolecular Shono-Type Oxidative Coupling of Glycine Derivatives
Lei Liu, Zhenhui Xu, Tao Liu, Chao Xu, Wangqin Zhang, Xiangqi Hua, Fei Ling* and Weihui Zhong*
*College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China, Email: lingfeizjut.edu.cn, weihuizhongzjut.edu.cn
L. Liu, Z. Xu, T. Liu, C. Xu, W. Zhang, X. Hua, F. Ling, W. Zhong, J. Org. Chem., 2022, 87, 11379-11386.
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An atom-economical and eco-friendly electrochemical oxidation/cyclization of glycine derivatives through intramolecular Shono-type oxidative coupling provides a variety of 2-substituted benzoxazoles in good yields. This oxidative cyclization proceeded in transition metal- and oxidant-free conditions and generated H2 as only byproduct.
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