Tetrabutylammonium Iodide Catalyzed Epoxidation of Naphthoquinone Derivatives with tert-Butyl Hydroperoxide as an Oxidant
作者:Bai-Ru Ai、Xu-Ling Chen、Yu Dong、Lei Tang、Ji-Yu Wang
DOI:10.1055/s-0036-1589035
日期:2017.9
reaction time, and broad substrate scope An efficient and environmentally benign procedure has been developed for the epoxidation of naphthoquinone derivatives by using tetrabutylammonium iodide as a catalyst and tert-butyl hydroperoxide as an oxidant in the presence of silicon dioxide. This protocol, which provides a facile base-free methodology for the synthesis of some new naphthoquinone-based epoxides