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An innovative nanocatalyst (KCC‐1‐nPr‐Met) has been prepared from the covalent attachment of metformin on the channels and the pores of n‐propyl amine functionalized dendritic fibrous nanosilica (DFNS) and used towards efficient, green, and high yield synthesis of tetrahydro‐4H‐chromenes derivatives by one‐pot three‐component reaction of aromatic aldehydes, malononitrile, and dimedone in H2O‐EtOH...
Gold nanoparticles supported on thiol‐functionalized reduced graphene oxide (AuNPs@RGO‐SH) were found to be a biocompatible, stable, recyclable heterogeneous catalyst. The catalysts were characterized by field emission scanning electron microscopy (FE‐SEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FT‐IR), thermal gravimetric analysis (TGA), and X‐ray diffraction spectroscopy...
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