Self-Immolative Reduction of Trifluoromethyl Sulfoxides Promoted by Trifluoromethanesulfonic Anhydride

[摘要]：We investigated the behavior of the extensively used system trifluoromethanesulfonic anhydride/sulfoxide in the absence of any added nucleophilic species. We show here, with the help of F-19 NMR spectroscopy, that in the case of trifluoromethyl sulfoxides this results initially in the net reduction of the sulfoxide to a sulfane. We propose a mechanism involving sulfoxide itself as the reducing agent.

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