An efficient three-component approach for the diastereoselective synthesis of trans-2,3-dihydrofuran derivatives: an exceptional catalytic activity of SiO2 nanoparticles
作者:Omekolsoom Sheibani、Sayed Hossein Banitaba
DOI:10.1007/s11696-023-02822-3
日期:2023.9
reactions in the presence of solid nano-catalysts have attracted significant research interest in recent years. In this regard, a fast and operationally facile one-step tandem strategy for the diastereoselective synthesis of rel-(2R,3R)-2-benzoyl-2,3-dihydro-3-substitutedphenyl-4H-furo[3,2-c][1]benzopyran-4-one has been developed. This protocol has been applied via solvent-free condensation of aromatic aldehydes
近年来,在固体纳米催化剂存在下进行有机反应引起了广泛的研究兴趣。在这方面,一种快速且操作简便的一步串联策略用于非对映选择性合成rel -(2R,3R)-2-benzoyl-2,3-dihydro-3-substitutedphenyl-4 H -furo[3,2- c][1]benzopyran-4-one 已开发。该协议已通过芳香醛、4-羟基香豆素和原位生成的苯甲酰溴化吡啶在 SiO 2上的无溶剂缩合得到应用纳米粒子作为非金属氧化物催化剂。该协议对环境有利,因为反应过程中不需要有机溶剂。此外,该方法快速、产率高、催化剂负载量低,而且不涉及大量的后处理程序或色谱分离。该催化剂价格低廉且非常温和,并且可以在六次运行中循环使用而不会显着降低活性。