Catalytic application Fe3O4@SiO2 @(CH2)3-urea-dithiocarbamic acid for the synthesis of triazole-linked pyridone derivatives

In this study, synthesis and characterization of an acidic-hydrogen bonding dual role and recover-able catalyst [Fe3O4 @SiO2 @(CH2)3-urea-dithiocarbamic acid] was reported. The catalyst was character-ized with several techniques such as Fourier transform-infrared spectroscopy (FT-IR), energy dispersive spectroscopy (EDS), elemental mapping (Mapp), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), derivative thermogravimetry (DTG) and vibrating sample magnetometer (VSM) analysis. Also, to review the catalytic performance of Fe3O4 @SiO2 @(CH2)3-urea-dithiocarbamic acid, we investigated the catalytic synthesis of new pyridones with 1,2,3-triazole moiety. Good yield of products, recovering and reusability of catalyst and mild reac-tion conditions can be considered as the advantages of the described catalytic system. An anomeric-based oxidation mechanism is suggested for the last step of the preparation of desired molecules.(c) 2022 Published by Elsevier B.V.