A metal-free visible light photoredox-catalyzed synthesis of N-unsubstituted enaminosulfones from vinyl azides and sodium sulfinates in moderate to high yields is described. The reaction proceeds in ethanol and uses eosin Y as a readily available photocatalyst in combination with nitrobenzene as an electron shuttle. Taking into account the number of steps involved (generation of the sulfonyl radical
本文描述了由
金属
叠氮化物和亚
磺酸钠以中等至高收率的无
金属可见光光氧化还原催化的N-未取代的烯
氨基砜的合成。该反应在
乙醇中进行,并使用
曙红Y作为易得的光催化剂,并与
硝基苯结合用作电子穿梭物。考虑到涉及的步骤数(生成磺酰基,将其加至双键,消除分子氮并形成亚
氨基自由基,然后使其还原和质子化)以及氧化还原活性反应的数量对于合作伙伴,该过程的选择性非常出色。