A regioselective metal-free preparation of 4-fluorosulfonyl 1,2,3-triazoles from organic azides and a hitherto underexplored bromovinylsulfonyl fluoride building block is described. This reaction is very general and was extended to the synthesis of various sulfonates, sulfonamides, and sulfonic acid derivatives of triazoles and other azole heterocycles which would otherwise be difficult to access by existing methods.

This study presents a metal-free, regioselective method for synthesis of 4-fluorosulfonyl 1,2,3-triazoles and related compounds using bromovinylsulfonyl fluoride, offering potential for new azole heterocycles.

Paper

Regioselective Synthesis of Fluorosulfonyl 1,2,3-Triazoles from Bromovinylsulfonyl Fluoride.

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