Catalytic application of 1-(carboxymethyl)pyridinium iodide on the synthesis of pyranopyrazole derivatives

Catalytic application of 1-(carboxymethyl)pyridinium iodide on the synthesis of pyranopyrazole... Article history: In this investigation, acetic acid functionalized pyridinium salt, namely 1-(carboxymethyl)pyridinium Received 12 December 2015 iodide {[cmpy]I}, has been introduced as reusable catalyst for green, simple and efficient synthesis of Received in revised form 13 January 2016 6-amino-4-(4-methoxyphenyl)-5-cyano-3-methyl-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazoles by the Accepted 1 February 2016 one-pot tandem four-component condensation reaction of aryl aldehydes with ethyl acetoacetate, mal- Available online 3 February 2016 ◦ 1 13 ononitrile and hydrazine hydrate at 100 C under solvent-free conditions. Additionally, H and C NMR, mass, CHN analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), Keywords: thermal gravimetric analysis (TGA), differential thermal gravimetric (DTG), X-ray diffraction analysis Pyranopyrazole (XRD), and calculation of crystallite size and inter planer distance of the catalyst have been investigated. Tandem reaction © 2016 Elsevier B.V. All rights reserved. 1-(Carboxymethyl)pyridinium iodide Solvent-free 1. Introduction focused on the development of new protocols for the preparation of these compounds. Tandem reaction, as a modern protocol in organic transforma- Recently, we have introduced a new category of ionic liq- tions, is a reaction in which several bonds are formed in some uids and solid salts (with an organic cation), namely sulfonic acid sequences without separating of any intermediates, changing reac- functionalized http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Molecular Catalysis A: Chemical Elsevier

Catalytic application of 1-(carboxymethyl)pyridinium iodide on the synthesis of pyranopyrazole derivatives

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
1381-1169
eISSN
1873-314X
D.O.I.
10.1016/j.molcata.2016.02.003
Publisher site
See Article on Publisher Site

Abstract

Article history: In this investigation, acetic acid functionalized pyridinium salt, namely 1-(carboxymethyl)pyridinium Received 12 December 2015 iodide {[cmpy]I}, has been introduced as reusable catalyst for green, simple and efficient synthesis of Received in revised form 13 January 2016 6-amino-4-(4-methoxyphenyl)-5-cyano-3-methyl-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazoles by the Accepted 1 February 2016 one-pot tandem four-component condensation reaction of aryl aldehydes with ethyl acetoacetate, mal- Available online 3 February 2016 ◦ 1 13 ononitrile and hydrazine hydrate at 100 C under solvent-free conditions. Additionally, H and C NMR, mass, CHN analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), Keywords: thermal gravimetric analysis (TGA), differential thermal gravimetric (DTG), X-ray diffraction analysis Pyranopyrazole (XRD), and calculation of crystallite size and inter planer distance of the catalyst have been investigated. Tandem reaction © 2016 Elsevier B.V. All rights reserved. 1-(Carboxymethyl)pyridinium iodide Solvent-free 1. Introduction focused on the development of new protocols for the preparation of these compounds. Tandem reaction, as a modern protocol in organic transforma- Recently, we have introduced a new category of ionic liq- tions, is a reaction in which several bonds are formed in some uids and solid salts (with an organic cation), namely sulfonic acid sequences without separating of any intermediates, changing reac- functionalized

Journal

Journal of Molecular Catalysis A: ChemicalElsevier

Published: May 1, 2016

References

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