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Green synthesis of spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles] using Fe(3)O(4)@l-arginine as a robust and reusable catalyst
The synthesized Fe(3)O(4)@l-arginine showed strong catalytic performance in the one-pot synthesis of spiropyranopyrazoles via the reactions of hydrazines, β-keto esters, isatins, and malononitrile or ethyl cyanoacetate under solvent-free conditions. The biologically active heterocyclic compounds inc...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787995/ https://www.ncbi.nlm.nih.gov/pubmed/31624802 http://dx.doi.org/10.1186/s13065-019-0636-1 |
Sumario: | The synthesized Fe(3)O(4)@l-arginine showed strong catalytic performance in the one-pot synthesis of spiropyranopyrazoles via the reactions of hydrazines, β-keto esters, isatins, and malononitrile or ethyl cyanoacetate under solvent-free conditions. The biologically active heterocyclic compounds including spiropyranopyrazole derivatives were efficiently synthesized in short reaction times and excellent yields in the presence of Fe(3)O(4)/l-arginine at room temperature. The highlighted features of the Fe(3)O(4)@l-arginine nanocomposite are highly stable, easy to separate, low loading, cost-effective with easy preparation and reusability of the catalyst. The heterogeneous nanocomposite was fully characterized by SEM, EDX, FT-IR, XRD and TEM analysis. |
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