Nanomagnetite-supported molybdenum oxide (nanocat-Fe-Mo): an efficient green catalyst for multicomponent synthesis of amidoalkyl naphthols
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Magnetite (Fe3O4)-supported molybdenum oxide (MoO3) was synthesized from simple starting precursors in aqueous medium. The synthesized nanocat-Fe-Mo was analyzed using several techniques such as X-ray diffraction (XRD) analysis, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and vibrating-sample magnetometry (VSM). The catalytic activity of the synthesized nanocat-Fe-Mo was studied in a benign one-pot multicomponent transformation for synthesis of amidoalkyl naphthol derivatives under solvent-free condition using both conventional and microwave irradiation methods. Nanocat-Fe-Mo was found to be highly active and could be reused seven times without notable loss in catalytic activity. The proposed method offers advantages such as good reaction yield (80–95%), short process time, simple workup, and recycling of the catalyst, representing important green chemistry principles.
KeywordsMNPs Nanocat-Fe-Mo Multicomponent reaction Amidoalkyl naphthols Benign media Green transformation
List of symbols
Charge coupled device
Energy dispersive spectroscopy
Full width at half maximum
Human immunodeficiency virus
Inductively coupled plasma-atomic emission spectroscopy
Large field detector
Nuclear magnetic resonance
Parts per million
Scanning electron microscopy
Transmission electron microscopy
S.R.B. gratefully thanks the BCUD, Savitribai Phule Pune University, Pune for granting research stipend. The authors are grateful to the Director of SAIF, Panjab University (Chandigarh, India) for spectral analysis. S.R.B. thanks Dr. M. B. Gawande for constant inspiration. We also acknowledge the HOD and Principal, S.S.G.M. College, Kopargaon, Ahmednagar (MH) for providing research facilities.
Compliance with ethical standards
Conflict of interest
The authors declare they have no competing financial interests.
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