Zakeri, M. and Nasef, M. M. and Kargaran, T. and Ahmad, A. and Abouzari Lotf, E. and Asadi, J. (2017) Synthesis of pyrano2,3-cpyrazoles by ionic liquids under green and eco-safe conditions. Research on Chemical Intermediates, 43 (2). pp. 717-728. ISSN 0922-6168
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Abstract
Optimization of a green approach to the synthesis of pyrano[2,3-c]pyrazoles based on the one-pot, four-component condensation via a domino Knoevenagel/Michael/cyclization sequence was investigated. This method involved the evaluation of the activity of several ionic liquids (ILs) in various solvents. This one-pot, four-component reaction revealed simplicity, higher yield and lower toxicity advantages over a corresponding three-component method. The effect of reaction parameters including the type and amount of catalyst, type of solvent, reaction temperature and time were studied with respect to yield of pyrano[2,3-c]pyrazoles. Catalyst recyclability and time-saving aspects of the reaction suggest that this method presents real alternatives over conventional reaction protocols.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 1-Phenyl-3-methyl pyrazolone, Green chemistry, Ionic liquids, Pyrano2,3-cpyrazoles |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Malaysia-Japan International Institute of Technology |
| ID Code: | 75733 |
| Deposited By: | Widya Wahid |
| Deposited On: | 30 Apr 2018 13:13 |
| Last Modified: | 30 Apr 2018 13:13 |
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