Litcius/Paper detail

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, Weihui Zhong

2022The Journal of Organic Chemistry12 citationsDOI

Abstract

Herein, an atom-economical and eco-friendly electrochemical oxidation/cyclization of glycine derivatives through intramolecular Shono-type oxidative coupling is disclosed, leading to a variety of 2-substituted benzoxazoles in 51–85% yields. This oxidative cyclization proceeded in transition metal- and oxidant-free conditions and generated H2 as only a byproduct. Additionally, gram-scale reactions and a broad substrate scope demonstrated the synthetic usefulness of this protocol.

Topics & Concepts

ChemistryIntramolecular forceElectrosynthesisOxidative coupling of methaneGlycineOxidative phosphorylationCombinatorial chemistrySubstrate (aquarium)StereochemistryElectrochemistryMedicinal chemistryOrganic chemistryCatalysisAmino acidBiochemistryOceanographyGeologyPhysical chemistryElectrodeCatalytic C–H Functionalization MethodsRadical Photochemical ReactionsSulfur-Based Synthesis Techniques