The general quantitative cycloaddition reactions of the dithianitronium cation with olefins: the preparation of 1,3,2-dithiazolium and 1,4-dithia-7-azanorbornylium cations and the crystal and molecular structure of 1,4-dithia-7-azanorbornylium hexafluoroarsenate(V)

Abstract

A number of olefins react quantitatively with S₂NAsF₆via a concerted symmetry allowed cycloaddition to give 1 : 1 and 2 : 1 stoicheiometric cationic products: the generality of reaction is rationalised and the X-ray crystal structure determination of the 1,4-dithia-7-azanorbornylium cation is reported.