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Ionic liquid gel: A heterogeneous catalyst for Erlenmeyer-Plochl and Henry reaction

Abstract

Ionic liquid gel has been prepared by entrapping 1-butyl-3-methylimidazolium hydroxide ([Bmim]OH) in an aqueous agar gel. The ionic liquid gel has been characterized by Fourier transform infrared (FT-IR), Fourier transform Raman (FT-Raman) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and energy dispersive X-ray analysis (EDX). The ionic liquid gel has been successfully employed as a heterogeneous catalyst in the Erlenmeyer-Plochl reaction involving aldehydes, hippuric acid and acetic anhydride as well as in the Henry reaction between aldehydes and nitromethane in ethanol at a room temperature. The heterogeneity of ionic liquid gel has been confirmed by using hot filtration test and leaching studies. Additionally, the ionic liquid gel could be easily recovered by simple filtration and reused for five times without significant loss in catalytic activity.

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Publication details

The article was received on 21 Jan 2018, accepted on 09 May 2018 and first published on 10 May 2018


Article type: Paper
DOI: 10.1039/C8NJ00367J
Citation: New J. Chem., 2018, Accepted Manuscript
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    Ionic liquid gel: A heterogeneous catalyst for Erlenmeyer-Plochl and Henry reaction

    M. Jagdale, A. Naikwade, R. S. Salunkhe, M. Rajmane and G. S. Rashinkar, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00367J

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