Copper (II) Ions Immobilized onto Aminoquinoline-Functionalized Ferrite: A New Efficient and Recoverable Catalyst for “in Water” Synthesis of Triazole Derivatives

摘要

Since the design and development of new ideal catalysts pave the way to green chemistry, a concise, convenient and green protocol was developed for the one-pot three-component synthesis of 1,4-disubstituted-1,2,3-triazoles in the presence of a magnetic heterogeneous copper catalyst at room temperature and micellar medium. An easily prepared copper(II) chloride immobilized on 8-aminoquinoline functionalized magnetic Fe3O4@SiO2 (MNPs@8-AQ.CuCl2) showed high catalytic performance for the micellar promoted 1,3-dipolar cycloaddition of alkyl azides to terminal alkynes in water and ambient temperature condition. Various techniques, such as Fourier transform infrared (FT-IR), X-ray Diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Energy-dispersive X-ray spectroscopy (EDX), thermogravimetric analysis (TGA), Elemental analysis on carbon, hydrogen and nitrogen (CHN) and atomic absorption spectroscopy (AAS) were used to confirm the successful synthesis of the heterogeneous catalyst.