Abstract

A number of β-iodovinyl sulfones were synthesized by direct difunctionalization of internal alkynes with arenesulfonyl iodides under irradiation with red light (λ_max 625 nm) generated by an economical LED source. The products were obtained in high yields (68–99%) from equimolar amounts of the reactants. The reaction of sulfonyl iodides with internal alkynes follows a radical mechanism and provides a regioselective method of synthesis of β-iodovinyl sulfones.

中文翻译：

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红光（λ 625 nm）光引发内部炔烃碘磺酰化合成 β-碘乙烯基砜

摘要

在经济型 LED 光源产生的红光（λ _max 625 nm）照射下，通过内部炔烃与芳磺酰碘的直接双官能化合成了许多 β-碘乙烯基砜。由等摩尔量的反应物以高产率（68-99%）获得产物。磺酰碘与内部炔烃的反应遵循自由基机理，并提供了合成β-碘乙烯基砜的区域选择性方法。