A photocatalyst-free visible light mediated decarboxylative sulfono functionalization protocol has been explored for the synthesis of (E)-vinyl sulfones from cinnamic acids and bench-stable arylazo sulfones. The latter have been utilized as sulfonyl radical precursors under blue LED irradiation along with Cs₂CO₃, air and KI to obtain the vinyl aryl sulfones as well as vinyl alkyl sulfones in moderate to excellent yields. Besides the non-photocatalytic conditions, high ecosustainability, low cost, ease of operation and access to vinyl alkyl sulfones are certain indispensable traits of the developed method.

中文翻译：

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由肉桂酸和芳基偶氮砜合成的无光催化剂可见光驱动的（E）-乙烯基砜的合成

已经探索了一种无光催化剂的可见光介导的脱羧磺酰基官能化方案，用于从肉桂酸和稳定的芳基偶氮砜合成（E）-乙烯基砜。后者已与Cs ₂ CO ₃，空气和KI一起在蓝色LED辐射下用作磺酰基自由基前体，以中等至极好的收率获得了乙烯基芳基砜和乙烯基烷基砜。除了非光催化条件外，高生态可持续性，低成本，易于操作和易于获得乙烯基烷基砜等也是该开发方法必不可少的特性。