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Copper nanoparticles grafted on carbon microspheres as novel heterogeneous catalysts and their application for the reduction of nitrophenol and one-pot multicomponent synthesis of hexahydroquinolines

Abstract

Novel carbon microspheres-supported metallic copper nanoparticles (Cu-NP/C) were synthesized using a low cost and facile method based on carbonising a styrene-based chelate-forming cation exchange resin loaded with Cu2+ ions. The metal-organic framework served as both copper and carbon source. Cu-NP/C microspheres were characterized by XRD, Raman, SEM, TGA, EDAX, and BET surface area analyser, and employed as heterogeneous catalysts for the reduction of 4-nitrophenol to 4-aminophenol by NaBH4 and for the synthesis of medicinally significant hexahydroquinoline derivatives based on the one pot multi-component reaction of aldehydes, dimedone, ethyl acetoacetate, and ammonium acetate. The sustainable and cheap starting material, the relatively easy synthetic procedure, the catalytic efficiency, and the easy separation and reusability of Cu-NP/C microspheres opened the door for their wide scale applications.

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Publication details

The article was received on 18 Sep 2017, accepted on 04 Dec 2017 and first published on 04 Dec 2017


Article type: Paper
DOI: 10.1039/C7NJ03562D
Citation: New J. Chem., 2017, Accepted Manuscript
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    Copper nanoparticles grafted on carbon microspheres as novel heterogeneous catalysts and their application for the reduction of nitrophenol and one-pot multicomponent synthesis of hexahydroquinolines

    T. Pasinszki, M. Krebsz, G. G. Lajgut, T. Kocsis, L. Kótai, S. S. Kauthale, S. Tekale and R. P. Pawar, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ03562D

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