Ce@STANPs/ZrO₂ as Nanocatalyst for Multicomponent Synthesis of Isatin-Derived Imidazoles under Green Reaction Conditions.

ABSTRACT: A highly efficient and recyclable catalyst, cerium-immobilized silicotungstic acid nanoparticle-impregnated zirconia (Ce@STANPs/ZrO₂), has been synthesized. The catalytic activity of Ce@STANPs/ZrO₂ was investigated for the first time in multicomponent synthesis of isatin-based imidazoles under microwave irradiation in water. Ce@STANPs/ZrO₂ was used for C=O bond activation in overall reaction to synthesize isatin-based imidazoles. The structure of catalyst was confirmed by characterization techniques, such as Fourier transform infrared (FTIR), scanning electron microscopy (SEM)/energy dispersive X-ray, elemental mapping, transmission electron microscopy, ζ-potential and diffraction light scattering, X-ray diffraction (XRD), thermogravimetric analysis, temper

SUBMITTER: Khan MU 

PROVIDER: S-EPMC6645424 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature