Ligand-Free Suzuki Cross-Coupling Reactions: Application to β-Halo-α,β-Unsaturated Aldehydes
作者:Pranjal Gogoi、Pranjal Bezboruah、Romesh C. Boruah
DOI:10.1002/ejoc.201300491
日期:2013.8
ligand-free Suzuki–Miyaura reaction of β-halo α,β-unsaturated aldehydes with boronic acids in aqueous media at room temperature is described. Under the optimized conditions, both steroidal and nonsteroidal β-halo α,β-unsaturated aldehydes reacted rapidly with the boronic acids to provide a series of aryl-substituted derivatives in excellent yields. Moreover, the protocol was extended to the direct one-pot
描述了 β-卤代 α,β-不饱和醛与硼酸在室温下在水性介质中的一种简便、高效、无配体的 Suzuki-Miyaura 反应。在优化的条件下,甾体和非甾体 β-卤代 α,β-不饱和醛均与硼酸快速反应,以优异的产率提供了一系列芳基取代的衍生物。此外,该协议还扩展到在微波辐射下通过 Suzuki-Miyaura 交叉偶联/醇醛缩合级联反应直接一锅法合成多环芳烃。