Synthesis, characterization and catalytic application of Fe3O4@Propylsilane-PyridineHSO4 for efficient synthesis of dihydropyrido3,2-d:5,6-d´dipyrimidine derivatives

In this research, Fe3O4@Propylsilane-Pyridine[HSO4] magnetic nanoparticles were synthesized via functionalization of Fe3O4 by tri-methoxy silyl propyl amine, pyridine-2-carbaldehyde and sulfuric acid. The structures of the synthesized nanoparticles at different stages were confirmed by FT-IR spectroscopy. Also, the crystal structure, morphology and thermal stability of the nanoparticles were investigated using XRD, SEM, TEM and TGA analyzes. Finally, dihydropyrido[3,2-d: 5,6-d'] dipyrimidine derivatives were synthesized by using of these nanoparticles as an effective catalysts. Comparison of the performance of this catalyst with other catalysts showed that the nano-catalysts made in this research, significantly increase the yield and reaction rate compared to other catalysts.