Fe۳O۴@RHA nanocomposite: eco-friendly and reusable catalysts for solvent free Biginelli reaction

In this study, Fe۳O۴/RHA nanocomposite was constructed. The heterogeneous reusable catalyst was characterized using appropriate techniques such as X-ray diffraction (XRD), thermogravimetry analysis (TGA) and vibrating-sample magnetometer (VSM). The resulting nanocatalyst was successfully used for the condensation of various aromatic aldehydes, ethyl acetoacetate and urea under solvent-free and mild conditions to yield dihydropyrimidin-۲(۱H)-one compounds in good to excellent yields. Also, the experimental evidence was demonstrated Fe۳O۴/RHA nanocomposite could act as a recoverable and reusable nanocatalyst without a meaningful drop in the yield.

Keywords:

Fe۳O۴ , RHA , Biginelli , nanocomposite