Multicomponent Cascade Synthesis of Biaryl-Based Chalcones in Pure Water and in an Aqueous Micellar Environment
作者:Nicola Armenise、Danilo Malferrari、Sara Ricciardulli、Paola Galletti、Emilio Tagliavini
DOI:10.1002/ejoc.201600095
日期:2016.7
the resulting intermediates underwent an in-situ aldol condensation reaction to give biaryl(hetero)chalcones in good to excellent yields. When the protocol was applied to highly lipophilic or less reactive reagents, micellar catalysis was required for good results. To achieve this, we successfully used a new surfactant obtained from renewable resources that we recently designed. Furthermore, using
具有挑战性的联芳基查尔酮的多组分级联合成在纯水和水性胶束系统中进行。该方案的第一步是在水性介质中进行简单的 Pd 催化、无配体和有氧 Suzuki-Miyaura 反应。事实证明,这对于芳基和杂芳基溴化物与不同芳基硼酸的偶联非常有效。随后,所得中间体进行原位羟醛缩合反应,以良好至极好的收率得到联芳基(杂)查耳酮。当该协议应用于高度亲脂性或反应性较低的试剂时,需要胶束催化才能获得良好的结果。为了实现这一目标,我们成功地使用了一种从我们最近设计的可再生资源中获得的新型表面活性剂。此外,使用这种添加剂,