Calcined oyster shell nanoparticles (COS NPs): a new, efficient and reusable catalyst for one-pot rapid preparation of 1,8-dioxo-octahydroxanthenes under solvent-free conditions

Calcined oyster shell nanoparticles (COS NPs) as a novel heterogeneous nanocatalyst were prepared and fully characterized by X-ray fluorescence analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy equipped with an energy dispersive spectrometry (S...

Full description

Saved in:
Bibliographic Details
Published in:Research on chemical intermediates 2018-02, Vol.44 (2), p.1085-1103
Main Authors: Mohammadian, Narges, Akhlaghinia, Batool
Format: Article
Language:English
Subjects:
Aldehydes
Catalysis
Catalysts
Catalytic activity
Chemical synthesis
Chemistry
Chemistry and Materials Science
Electron microscopy
Energy transmission
Fourier transforms
Infrared analysis
Inorganic Chemistry
Nanoparticles
Physical Chemistry
Reaction time
Roasting
Scanning electron microscopy
Solvents
X ray fluorescence analysis
X ray powder diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Calcined oyster shell nanoparticles (COS NPs) as a novel heterogeneous nanocatalyst were prepared and fully characterized by X-ray fluorescence analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy equipped with an energy dispersive spectrometry (SEM-EDS) and transmission electron microscopy. The composition of this catalyst was determined, and it was clearly found that the particle size of COS NPs was about 100–120 nm. The nano-structured solid catalyst as an efficient and eco-friendly catalyst was used for the synthesis of 1,8-dioxo-octahydroxanthenes via the one-pot condensation reaction of 5,5-dimethylcyclohexane-1,3-dione (dimedone) with various aldehydes under solvent-free conditions. This new methodology is cost-effective and offers several advantages such as high yield, excellent purity, short reaction time, high atom economy, simple operation and a convenient workup procedure without the use of any injurious solvents. Moreover, the catalyst can be readily reusable, and considerable catalytic activity could be achieved after the six runs.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-017-3153-7