(E)-β-Iodo vinylsulfones are synthesized under ultrasound irradiation using alkynes, sulfonyl hydrazides, potassium iodide and hydrogen peroxide. The key features of this protocol are the speed and efficiency of the reactions, which afford good to excellent yields of the desired products by employing ultrasound as the driving force. Mechanistic studies reveal that a sulfonyl radical intermediate is generated via sulfonyl iodide homolysis.

中文翻译：

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超声辐照下炔烃的碘磺酰化

(E)-β-碘乙烯基砜是在超声辐照下使用炔烃、磺酰肼、碘化钾和过氧化氢合成的。该协议的主要特点是反应的速度和效率，通过采用超声波作为驱动力，可以提供所需产品的优良产量。机理研究表明，磺酰自由基中间体是通过磺酰碘均裂产生的。