Toluene-p-thiosulphonates, RCH2SSO2 Tol (1) where R is an electron-withdrawing group are transformed readily into α-sulphonyldisulphides (2) which, with triethylamine, undergo fragmentation–elimination to give 2 moles of thioaldehydes, RCHS.
G. W. Kirby, A. W. Lochead and G. N. Sheldrake, J. Chem. Soc., Chem. Commun., 1984, 1469 DOI: 10.1039/C39840001469
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