A convenient, simple, and multicomponent coupling strategy has been developed for the synthesis of highly functionalized tetrahydropyridines using FeCl3/SiO2 NPs as catalyst. This method demonstrated five-component coupling reactions of 1,3-dicarbonyl compounds, aromatic aldehydes and amines without an inert atmosphere. Atom economy, good yields, environmentally benign, and mild reaction conditions are some of the important features of this protocol. Notably, this catalyst could be recycled and reused for several times without noticeably decreasing the catalytic activity.
一种便捷、简单的多组分偶联策略已被开发,用于合成高度功能化的四氢
吡啶,采用FeCl3/SiO2纳米颗粒作为催化剂。该方法展示了在无需惰性气氛的情况下,1,3-二酮化合物、芳香醛和胺的五组分偶联反应。原子经济性、良好的产率、环境友好和温和的反应条件是该协议的一些重要特征。值得注意的是,该催化剂可以回收并重复使用多次,而不明显降低催化活性。