A practical method to synthesize substituted β-keto sulfones directly from ketones at room temperature has been developed. This method involves the nucleophilic addition of a base generated enolate to sulfonyl iodide. The reaction shows high chemoselectivity for the addition of a sulfonyl group to an α-carbon over a hydroxyl group. In addition, the given protocol provides good to excellent yields of β-keto sulfones under mild reaction conditions. Moreover, the regiochemical aspect of the protocol is also explored.
我们开发了一种在室温下直接从酮合成取代δ-酮砜的实用方法。该方法是将碱生成的烯醇与磺酰
碘进行亲核加成。与羟基相比,该反应对δ-碳上的磺酰基加成具有很高的
化学选择性。此外,在温和的反应条件下,所给出的方案还能提供良好甚至极佳的 δ² 酮砜产率。此外,还探讨了该方案的区域
化学性质。