Hypervalent Iodine–Catalyzed Cycloaddition of Nitrile Oxides to Alkenes
作者:Changbin Xiang、Tingting Li、Jie Yan
DOI:10.1080/00397911.2013.834364
日期:2014.3.4
convenient method for preparation of isoxazolines was developed by a catalytic cycloaddition of nitrileoxides generated in situfrom aldoximes to alkenes in the presence of a catalytic amount of iodobenzene. In this protocol, iodobenzene was first oxidized into the hypervalent iodine intermediate by m-chloroperbenzoic acid, which then transformed aldoximes into nitrileoxides, and a 1,3-dipolar cycloaddition