Catalytic application of sulfonic acid‐functionalized titana‐coated magnetic nanoparticles for the preparation of 1,8‐dioxodecahydroacridines and 2,4,6‐triarylpyridines via anomeric‐based oxidation
作者:Mohammad Ali Zolfigol、Fatemeh Karimi、Meysam Yarie、Morteza Torabi
DOI:10.1002/aoc.4063
日期:2018.2
We have developed green, efficient and powerful protocols for the preparation of 2,4,6‐triarylpyridines and 1,8‐dioxodecahydroacridines in the presence of Fe3O4@TiO2@O2PO2(CH2)2NHSO3H as a sulfonic acid‐functionalized titana‐coated magnetic nanoparticle catalyst under mild and solvent‐free reaction conditions. These protocols furnished the desired products in short reaction times with good to high
我们已开发出在Fe 3 O 4 @TiO 2 @O 2 PO 2(CH 2)2 NHSO 3存在下制备2,4,6-三芳基吡啶和1,8-二氧杂脱氢hydro啶的绿色,高效且有力的方法H在温和无溶剂的反应条件下作为磺酸官能化的钛包覆磁性纳米粒子催化剂。这些方案可在较短的反应时间内提供所需的产物,并具有良好的高收率(对于2,4,6-三芳基吡啶,为20–40分钟和80–86%;对于2,4,6-三芳基吡啶为15–90分钟和80–93% 1,8-二氧杂十二烷基hydro啶)。机械合成2,4,6-三芳基吡啶的最后一步是通过基于异头的氧化进行的。同样,在经过仔细研究的单罐多组分反应中,具有高周转数和周转频率的纳米磁性核-壳催化剂可以循环再利用。