Phei, Felicia Lin Lim and Tan, Khai Ching and Luna, Giuseppe and Tiekink, Edward R. T. * and Dolzhenko, Anton V (2019) A new practical synthesis of 3-amino-substituted 5-aminopyrazoles and their tautomerism. Tetrahedron, 75 (15). pp. 2314-2321. ISSN 0040-4020
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Tiekink A New Practical Synthesis of 3-amino Tetrahedron 2019 75 2314_acc.pdf - Published Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (738kB) | Preview |
Abstract
It was found that 3-amino-substituted 5-aminopyrazoles could be effectively prepared via hydrolytic decarboxylation of the corresponding 3,5-diaminopyrazole-4-carboxylates 5 under microwave irradiation. The reactions required short time (4 min) and were successfully reproduced in a larger scale and under conventional heating mimicking the microwave heating pattern. X-ray crystallography identified two different types of tautomers in crystals of related 5-aminopyrazoles with p-toluidyl and p-anisidyl moieties at the position 3, respectively.
| Item Type: | Article |
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| Subjects: | Q Science > QD Chemistry |
| Divisions: | Others > Non Sunway Academics Sunway University > School of Engineering and Technology [formerly School of Science and Technology until 2020] > Research Centre for Crystalline Materials moved to SMLS wef 2021 |
| Depositing User: | Dr Janaki Sinnasamy |
| Related URLs: | |
| Date Deposited: | 12 Apr 2019 05:51 |
| Last Modified: | 07 Oct 2020 08:42 |
| URI: | http://eprints.sunway.edu.my/id/eprint/1021 |
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