CuO/ZnO@N-GQDs@NH2 nanocomposite as superior catalyst for the synthesis of pyrimidine-triones

CuO/ZnO@N-GQDs@NH2 nanocomposite (copper(II) oxide/zinc oxide@ nitrogen-doped graphene quantum dots @aminated) as superior catalyst was applied for the synthesis of pyrimidine-trions by three-component reactions of N,N-dimethylbarbituric acid, benzaldehydes and para-methyl aniline or para-methoxy aniline under reflux condition in water. The catalyst was characterized by SEM (scanning electron microscope), FT-IR (Fouriertransform infrared spectroscopy), XRD (X-ray powder diffraction), TGA (thermogravimetric analysis), EDS (Energy-dispersive X-ray spectroscopy), and XPS (X-ray photoelectron spectroscopy). The best results were gained in H2O and we found the convincing results for the synthesis of pyrimidine-trions in the presence of CuO/ZnO@N-GQDs@NH2 nanocomposite (5 mg) under reflux conditions. This technique provides several benefits including green reaction conditions, great yields in concise times, a retrievable nanocatalyst, and low nanocatalyst loading.