Abstract
A novel and heterogeneous catalyst were prepared of magnetic nanoparticles Fe3O4 coated with silicate modified with graphene quantum dot-copper (GQD/Cu) and used as an efficient catalyst in the multicomponent reactions of Biginelli and Hantzsch. The nanocatalyst was examined by Fourier Transform Infrared (FTIR), thermogravimetric-differential thermal, X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), energy‐dispersive X‐ray (EDX), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) analysis. A wide range of 3, 4-dihydro pyrimidine-2-(1 H)-one (DHPM) and 1, 4-dihydropyridine (DHP) derivatives were synthesized with good-to-excellent efficiencies in the presence of the catalyst using a combination of aldehydes, 1, 3-dicarbonyls, and urea/ammonium acetate. The catalyst was taken out and recovered from the reaction mixture by an external magnetic field and reused after six runs with minimal activity loss.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
