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Application and characterization of eggshell as a new biodegradable and heterogeneous catalyst in green synthesis of 7,8-dihydro-4H-chromen-5(6H)-ones

Paper ID Volume ID Publish Year Pages File Format Full-Text
50571 46802 2013 6 PDF Available
Title
Application and characterization of eggshell as a new biodegradable and heterogeneous catalyst in green synthesis of 7,8-dihydro-4H-chromen-5(6H)-ones
Abstract

An efficient and eco-friendly method for the synthesis of 7,8-dihydro-4H-chromen-5(6H)-ones has been developed by using eggshell as a natural and heterogeneous catalyst. A mixture of an appropriate aldehyde, malononitrile and dimedone in the presence of eggshell at ambient temperature in EtOH resulted in 90–98% yields of the corresponding products. This new and green methodology is of interest due to use of a green, bioactive and biodegradable catalyst, its short reaction time, high yields without further purification and the ability to carry out the large scale reactions. Prepared eggshell was characterized by elemental analysis, infrared spectroscopy, particle size distribution, X-ray diffraction and fluorescence, scanning electron microscope, thermo gravimetric and BET surface area analysis.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Eggshell as a new bioactive and heterogeneous catalyst in organic synthesis ► Green, efficient and rapid synthesis of 7,8-dihydro-4H-chromen-5(6H)-ones ► Eggshell characterization with elemental analysis, XRD patterns and FT-IR spectra ► The ability of eggshell to carry out the large scale synthesis ► High catalytic activity and reusability of eggshell even after five cycles

Keywords
Eggshell; Environmentally friendly; Heterogeneous catalyst; Biodegradable; Bioactive catalyst; 7,8-Dihydro-4H-chromen-5(6H)-ones
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Application and characterization of eggshell as a new biodegradable and heterogeneous catalyst in green synthesis of 7,8-dihydro-4H-chromen-5(6H)-ones
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 33, 5 March 2013, Pages 70–75
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us