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>Preparation, characterization, and use of novel Cu@Fe3O4 MNPs in the synthesis of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-ones and 2H-indazolo[2,1-b]phthalazine-triones under solvent-free conditions
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Preparation, characterization, and use of novel Cu@Fe3O4 MNPs in the synthesis of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-ones and 2H-indazolo[2,1-b]phthalazine-triones under solvent-free conditions
Cu@Fe _(3) O _(4) MNPs as novel nanomagnetic reagents were prepared to investigate their catalytic behavior in the preparation of tetrahydrobenzimidazo[2,1- b ]quinazolin-1(2 H )-ones, as important biologically active compounds. Then, characterization of the synthesized nanoparticles was performed using different methods including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), energy dispersive X-ray (EDX), and scanning electron microscopy (SEM). All reactions were performed with small amounts of the Cu@Fe _(3) O _(4) MNPs under solvent-free conditions. After completion of the reaction, because of the magnetic nature of the nanocatalyst, they could be simply separated with an external magnet and easily reused with no considerable decrease in the catalytic behavior even after seven runs.
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机译：制备了Cu @ Fe _（3）O _（4）MNPs作为新型纳米磁性试剂，以研究其在重要生物活性四氢苯并咪唑并[2,1-b]喹唑啉-1（2 H）-ones制备中的催化行为。化合物。然后，使用包括傅立叶变换红外光谱（FT-IR），X射线衍射（XRD）分析，热重分析（TGA），振动样品磁力计（VSM），能量色散X射线在内的不同方法对合成的纳米颗粒进行表征（EDX）和扫描电子显微镜（SEM）。所有反应均在无溶剂条件下用少量Cu @ Fe _（3）O _（4）MNP进行。反应完成后，由于纳米催化剂的磁性，它们可以简单地用外部磁体分离，并且即使在七次运行后，催化性能也不会显着降低，易于重复使用。
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