Background
A new, green and environmentally friendly protocol has been developed for the synthesis of tetrahydrodipyrazolopyridine derivatives. The structures of these products were determined in terms of melting point, FTIR, NMR and Mass spectroscopy.
Results
The tetrahydrodipyrazolopyridine derivatives were synthesized in water through a catalyst-free pseudo-six-component reaction of hydrazine hydrate, ethyl acetoacetate, ammonium acetate and aldehyde at room temperature.
Conclusions
This novel procedure has some advantages such as aqueous media, high yield and simple work-up.
Graphical Abstract
Sb(iii)–Gum Arabic composite as a unique natural-based and nontoxic catalyst was synthesized and characterized by FT-IR, XRD, TGA, ICP, BET, EDX and mapping.
In the present research work, a novel catalyst based on natural material, namely, Fe3O4@nano-almondshell@OSi(CH2)3/NHCH2pyridine/CuII abbreviated (FNAOSiPAMP/CuII) was designed and prepared. The properties of the catalyst was identified by Fourier-transform infrared spectroscopy (FT-IR), Thermogravimetry ananlysis (TG), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDS), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), and Mapping. Furthermore, the evaluation of catalytic activity was done in the course of naphtho-1,3-oxazines synthesis. Solvent-free conditions, simplicity of operation, easy work-up and use of an eco-friendly catalyst are some of advantages of this protocol.
In this work, we have reported synthesis, characterization of Fe3O4@nano-almond shell@OSi(CH2)3/DABCO as a novel magnetic natural based basic nanocatalyst. The characterization of this catalyst was done using different spectroscopic and...
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