|
چکیده
|
Magnetic nanoparticles (MNPs) and mesoporous materials are two important kinds of heterogeneous support in the synthesis of reusable catalysts [1, 2]. MNPs have unique features such as easy functionalization, nontoxicity, and especially facile removing with assistance of an external magnet [3-5]. However, the major disadvantages of MNPs are low surface area and low stability. On the other hand, mesoporous materials have unique properties such as considerable stability, high specific surface area, and large and uniform pore size [6]. However, the major disadvantages of mesoporous materials are time consuming, difficulty, and expensive conventional work-up procedures. In order to combine advantages of both magnetic nanoparticles and mesoporous materials, magnetic MCM-41 nanoparticles (Fe3O4/MCM-41 MNPs) were synthesized in this work. Fe3O4/MCM-41 MNPs has a large surface area, and also can be recovered using an external magnet. Therefore, Fe3O4/MCM-41 MNPs can be considered as ideal support for the synthesis of reusable catalysts. In this regards, we repport a new complex of copper on Fe3O4/MCM-41 MNPs as efficient and reusable nanocatalyst (Cu@Fe3O4/MCM-41 MNPs) in the selective synthesis of tetrazole derivatives. Because, tetrazoles are an important class of heterocycle compounds with various applications in coordination chemistry, in medicinal chemistry, in catalysis science, in organometallic chemistry, in material chemistry, and in agriculture [7].
|