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Issue 9, 2016
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Nano-ZrO2 sulfuric acid: a heterogeneous solid acid nano catalyst for Biginelli reaction under solvent free conditions

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Abstract

Nano-ZrO2 sulfuric acid [n-ZrO2–SO3H (n-ZrSA)] has been synthesized from the reaction of nano-ZrO2 with chlorosulfonic acid as sulfonating agent. This catalyst was characterized via FT-IR, XRD, TGA, FESEM, TEM, EDX, BET, BJH, ICP and pH analysis. We show that n-ZrSA catalyzed the Biginelli reaction for the synthesis of 3,4-dihydropyrimidin-2(1H)one derivatives in high yields under solvent-free conditions by the reaction of aldehyde, β-diketoester and urea (or thiourea). The main advantages of the catalyst are its non-toxic nature, high stability and reusability.

Graphical abstract: Nano-ZrO2 sulfuric acid: a heterogeneous solid acid nano catalyst for Biginelli reaction under solvent free conditions

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Supplementary files

Article information


Submitted
19 Sep 2015
Accepted
10 Jan 2016
First published
13 Jan 2016

RSC Adv., 2016,6, 7419-7425
Article type
Paper

Nano-ZrO2 sulfuric acid: a heterogeneous solid acid nano catalyst for Biginelli reaction under solvent free conditions

E. Kolvari, N. Koukabi, M. M. Hosseini, M. Vahidian and E. Ghobadi, RSC Adv., 2016, 6, 7419
DOI: 10.1039/C5RA19350H

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