In the present study, for the first time the synthesis of sulfamic acid supported on Fe3O4@SiO2 superpara magnetic nanoparticles as a solid acid catalyst with large density of sulfamic acid groups was suggested. The structural and magnetic properties of functionalized Fe3O4@SiO2 nanoparticles are identified by TEM, IR, VSM, XRD, TGA and elemental analysis. Then, the applicability of the synthesized nanoparticles was tested as a recyclable acidic catalyst for the synthesis of quinoline derivatives, an important class of potentially bioactive compounds. The products are obtained in good to high yields (72–98%) from one-pot reaction procedure involving carbonyl compounds and 2-amino benzophenone under solvent-free conditions.
在本项研究中,首次提出了一种新型的固体酸催化剂,即负载于
Fe3O4@SiO2超顺磁性纳米粒子上的高密度
磺胺酸基团合成的
磺胺酸催化剂。通过透射电镜(
TEM)、红外光谱(IR)、振动样品磁强计(VSM)、X射线衍射(XRD)、热重分析(TGA)和元素分析等手段,确定了功能化 @SiO2纳米粒子的结构和磁性质。接着,对合成的纳米粒子作为可循
环酸性催化剂在合成
喹啉衍
生物(这是一类具有潜在
生物活性的重要化合物)中的应用进行了测试。在无溶剂条件下,通过羰基化合物和2-
氨基二苯酮的一锅法反应,可获得良好至高产率(72–98%)的产品。