在这项研究中,引入了Fe3O4@SiO2@NTMPThio-Cu作为一种新型的绿色异质纳米催化剂,具有基于Fe3O4@SiO2的环境友好且可重复使用的树枝状分子模板。这样,首先用氰尿酰氯对磁性二氧化硅纳米粒子进行了改性,其次是三聚氰胺和氨基硫脲,最终,它是用高性价比的金属铜装饰的。合成的纳米催化剂通过各种分析,如FT-IR,XRD,SEM,TGA,EDXFe3O4@SiO2@NTMPThio-Cu的效率是在温和的无溶剂条件下,在一锅法合成xanthene和螺羟吲哚-吡喃衍生物中测量的。效率高,优异的产品收率,温和的反应条件,操作简单,不使用有毒的有机溶剂,和该催化剂的可重复使用性增加了该技术对大规模环境友好操作的吸引力。
In this research, Fe3O4@SiO2@NTMPThio-Cu was introduced as a novel and green heterogeneous nanocatalyst with a dendrimer template that is environmentally friendly and reusable based on Fe3O4@SiO2. In this way, magnetic silica nanoparticles were first modified with cyanuric chloride, followed by melamine and thiosemicarbazide, and ultimately, it\'s decorated with the cost-effective metal copper. The synthesized nanocatalyst was characterized by various analyses such as FT-IR, XRD, SEM, TGA, and EDX. The efficiency of Fe3O4@SiO2@NTMPThio-Cu was measured in one-pot synthesis of xanthene and spirooxindole-pyran derivatives under mild solvent-free conditions. High efficiency, excellent yield of products, mild reaction conditions, simple operation, no use of toxic organic solvents, and reusability of this catalyst increase the attractiveness of this technique for large-scale environmentally friendly operations.