Abstract

In this paper, sublimated AlCl₃ has been embedded on nanosilica-Fe₃O₄ core via a simple method to obtain novel AlCl₃@nano Fe₃O₄-SiO₂ nanostructure for the first time. The newly synthesized solid has been characterized by Fourier transformed infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDAX), vibrating sample magnetometer (VSM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), Brunauer-Emmett-Teller (BET) measurements, and potentiometric titration techniques. The reactivity of the prepared nanoparticles was investigated in the synthesis of spiro[benzochromeno[2,3-d]pyrimidin-indolines] through the one-pot three-component condensation of different naphthols, isatin derivatives, and barbituric acids in the in refluxing ethanol successfully. The recovery and reusability of the nanostructure has also been examined within 4 runs without activity loss.

摘要

本文通过一种简单的方法将升华的AlCl ₃嵌入到纳米二氧化硅-Fe ₃ O ₄核上，获得了新型AlCl ₃ @nano Fe ₃ O ₄ -SiO _{2 。}首次采用纳米结构。新合成的固体已通过傅里叶变换红外光谱 (FT-IR)、场发射扫描电子显微镜 (FESEM)、能量色散 X 射线光谱 (EDAX)、振动样品磁力计 (VSM)、透射电子显微镜 (TEM) 进行了表征、X 射线衍射分析 (XRD)、Brunauer-Emmett-Teller (BET) 测量和电位滴定技术。研究了制备的纳米粒子在螺[苯并色烯[2,3- d ]合成中的反应性]嘧啶-二氢吲哚]通过不同的萘酚、靛红衍生物和巴比妥酸在回流乙醇中的一锅三组分缩合成功。纳米结构的回收率和可重复使用性也在 4 次运行中进行了检查，没有活性损失。