Reactions Involving the Addition of Dithio-acids to Unsaturated Compounds

Data on the reactions involving the addition of dithiocarboxylic, dithiocarbamic, and other heterosubstituted dithio-acids to compounds with a multiple bond are surveyed. It is shown that the character of the addition depends on the nature of the dithio-acid: dithiocarbamic and xanthic acids add via an ionic mechanism, while for dithiocarboxylic acids there is a possibility also of radical addition as well as cycloaddition together with the ionic addition.
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