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An efficient protocol for [2,3]-sigmatropic rearrangement of allyl and propargyl thioethers is reported. The key sulfonium ylide intermediate is in situ formed via S-arylation of arynes. This transition metal-free method allows for ready access to a wide array of functionalized thioether derivatives in good to excellent yields.

Graphical abstract: Aryne triggered [2,3]-sigmatropic rearrangement of allyl and propargyl thioethers

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