Girish, Y. R. and Sharath Kumar, K. S. and Manasa, H. S. and Shashikanth, S. (2014) ZnO: An eco-friendly, green Nano-catalyst for the synthesis of pyrazole derivatives under aqueous media. Journal of the Chinese Chemical Society, 61 (11). pp. 1175-1179. ISSN 0009-4536
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An efficient nano ZnO catalyzed green protocol for the synthesis of pyrazol derivatives by condensation of different substituted phenyl hydrazines/semicarbazide/thiosemicarbazide with 1,3-diketone/ketoester at ambient temperature has been achieved. ZnO nanocatalyst was prepared by low temperature solution combustion method. From the Scherrer method the crystallite size of ZnO was estimated and found to be in the range of 30-50 nm. The main advantage of this protocol is an excellent yield, short reaction time and easy work up procedure. The catalyst was found to be reusable up to five catalytic cycles without any appreciable loss in activity of the catalyst.
| Item Type: | Article |
|---|---|
| Subjects: | C Chemical Science > Chemistry |
| Divisions: | Department of > Chemistry |
| Depositing User: | Arshiya Kousar Library Assistant |
| Date Deposited: | 20 Jun 2019 06:21 |
| Last Modified: | 10 Jul 2019 05:32 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/3313 |
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