Document Type : Original Article

Author

Department of Chemistry, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

Abstract

In this work, 1-methyl imidazole-based ionic liquid stabilized on silica coated Fe3O4 magnetic nanoparticles [nano-Fe3O4@SiO2@(CH2)3-1-methyl imidazole]HSO4 as a new, efficient, and magnetic Brønsted acid nano-magnetic catalyst was synthesized and characterized using various techniques including, Fourier transform infrared spectrometer (FT-IR), scanning electron microscopy (SEM), thermo gravimetric analysis (TGA), X-ray diffraction patterns (XRD), and vibrating sample magnetometry (VSM). Magnetic nanoparticles (MNPs) were used to synthesize thr 5-arylmethylene-pyrimidine-2, 4, 6-trione derivatives by the one-pot condensation reaction between barbituric acid and various aldehydes in water at reflux conditions. Similarly, 2-arylidenemalononitriles were synthesized by the one-pot of condensation reaction between various aldehydes and malononitrilein water as a green solvent at room temperature. This method has several advantages, such as short reaction times and high yields, non-using of toxic solvent, being eco-friendly benign, recyclability and reusability of the catalyst with external magnet for several time.

Graphical Abstract

Synthesis of 5-arylmethylene-pyrimidine-2,4,6-trione and 2-arylidenemalononitriles derivatives using a new Brønsted acid nano magnetic catalyst

Keywords

Main Subjects

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