Laser flash photolysis of bis(phenylsulfonyl)diazomethane (1a) and ditosyldiazomethane (1b) leads to the formation of sulfonylsulfenes 8a/8b (λ max = 310 nm). Non-first-order kinetics and non-linear Stern−Volmer behavior suggest the formation of another transient species also absorbing at λ = 310 nm. Based on the results of DFT calculations, these species are tentatively identified as dithiocarbonate S,S,SЈ-trioxides 12a/b, which are formed from the oxathiirene
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