An unexpected domino reaction of β‐keto sulfones with acetylene ketones has been developed. The domino reaction of β‐keto sulfones with diynones proceeded smoothly in the presence of 30 mol% K₂CO₃ without other additives, and afforded the novel 3(2H)‐furanone derivatives. On replacing the diynones with terminal alkyne ketones, the reaction regioselectivity was changed and sulfonylbenzenes were obtained via benzannulation in good yields.

中文翻译：

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β-酮砜与碱促进的乙酮的意外多米诺反应：轻松合成3（2H）-呋喃酮和磺酰基苯

β-酮砜与乙炔酮发生了意想不到的多米诺反应。在没有其他添加剂的情况下，在30 mol％K ₂ CO ₃的存在下，β-酮砜与二炔酮的多米诺反应顺利进行，得到了新颖的3（2 H）-呋喃酮衍生物。用末端炔烃酮取代二炔酮后，反应区域选择性改变，并通过苯环化获得磺酰苯，收率很高。