The reaction of 1,5-dithiacyclo-octane 1-oxide with trifluoromethanesulphonic anhydride affords the corresponding disulphide dication as a stable crystalline salt which serves as an oxidizing agent in the oxidation of 1,2-diphenylhydrazine; the disulphide dication of 1,4-dithiane has also been isolated.
H. Fujihara, R. Akaishi and N. Furukawa, J. Chem. Soc., Chem. Commun., 1987, 930 DOI: 10.1039/C39870000930
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