The reactions of sulphur dioxide with thiols in the presence of triethylamine have been investigated. Aliphatic thiols gave a mixture of dialkyl disulphide and trisulphide in a ratio of ca. 7 : 3, which was independent of the reactant ratio. Addition of 1,4-benzoquinone caused a relatively small retardation. An ionic mechanism is tentatively proposed for the reaction.
F. Akiyama, J. Chem. Soc., Perkin Trans. 1, 1978, 1046 DOI: 10.1039/P19780001046
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