(Fe2O3)–MCM-41–nPrNH2 as a magnetically recoverable nanoreactor, was prepared through the reaction of (Fe2O3)–MCM-41 with 3-aminopropyltriethoxysilane in refluxing dry toluene. The catalyst with 10 wt% of loaded iron oxide nanoparticles was found to be a highly efficient nanocatalyst for the synthesis of a new class of 2,4-diphenylpyrido[4,3-d]pyrimidines under solvent free conditions in high to quantitative yields. By using an external magnet the catalyst was recovered and reused several times without any loss of efficiency. The prepared catalyst was characterized by transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray powder diffraction (XRD), and nitrogen physisorption measurements.
(
Fe2O3)–MC
M-41–nPrNH2作为一种可磁性回收的纳米反应器,通过在干燥
甲苯中回流( )–MC
M-41与3-
氨丙基三乙氧基
硅烷的反应制备而成。含有10 wt%负载的
氧化铁纳米颗粒的催化剂被发现是一种高效的纳米催化剂,在无溶剂条件下合成新型
2,4-二苯基吡啶并[4,3-d]
嘧啶,产率高到接近定量。通过使用外部磁
铁,催化剂可以被回收并多次重复使用,而没有效率损失。制备的催化剂通过透射电子显微镜(
TEM)、傅里叶变换红外光谱(FT-IR)、X射线粉末衍射(XRD)和氮气物理吸附测量进行了表征。