Synthesis of α-acyloxy ethers via direct esterification of carboxylic acids with ethers under metal-organic framework catalysis
作者:Phuong T.M. Ha、Thuan D. Le、Son H. Doan、Tung T. Nguyen、Nhan T.H. Le、Nam T.S. Phan
DOI:10.1016/j.tet.2017.08.040
日期:2017.10
verified, and α-acyloxy ethers were not produced via the contribution of leached iron species. The framework catalyst was reutilized many times for the transformation without a remarkable decline in catalytic activity. According to our best knowledge, this is the first heterogeneous catalytic approach towards the synthesis of α-acyloxy ethers via direct esterification of carboxylic acids with C(sp3)H bonds
合成了铁有机骨架MOF-235,并将其用作通过具有C(sp 3)H键的羧酸直接酯化合成α-酰氧基醚的有效多相催化剂。在直接酯化反应中,铁基骨架显示出比许多均相催化剂和各种MOF更高的催化生产率。α酰氧基醚的生成被显着地由氧化剂,和二-调节叔过氧化丁酯是最好的候选物。验证了多相催化作用,并且通过浸出铁物种的贡献未产生α-酰氧基醚。骨架催化剂被多次转化用于转化,而催化活性没有明显下降。据我们所知,这是通过具有C(sp 3)H键的羧酸直接酯化合成α-酰氧基醚的第一种非均相催化方法。