The oxidation of diphenyldiselenide with ammonium peroxydisulphate is a very simple and efficient method to produce phenylselenium cations in the absence of nucleophilic counter ions. The reaction carried out in the presence of an olefin, in acetonitrile or propionitrile containing trifluoromethanesulphonic acid and water afforded the amidoselenenylation products in good yield. The intramolecular
Preparation of Heterocycles via Visible-Light-Driven Aerobic Selenation of Olefins with Diselenides
作者:Qing-Bao Zhang、Pan-Feng Yuan、Liang-Lin Kai、Kai Liu、Yong-Liang Ban、Xue-Yang Wang、Li-Zhu Wu、Qiang Liu
DOI:10.1021/acs.orglett.8b03738
日期:2019.2.15
The aerobic dehydrogenative cyclization of alkenes with easily accessible diselenides facilitated by visible light is reported. Notably, the features of this transition-metal-free protocol are pronounced efficiency and practicality, good functional group tolerance, atom economy, and high sustainability, since ambient air and visible light are adequate for the clean construction of five- and six membered heterocycles in yields of up to 98%.