Ag/TiO2 nano-thin films as robust heterogeneous catalyst for one-pot, multi-component synthesis of bis (pyrazol-5-ol) and dihydropyrano[2,3-c]pyrazole analogs
| Autor: | Mohammad Saeed Hadavi, Fatemeh Noori Sadeh, Sahar Mahnaei, Maryam Fatahpour, Nourallah Hazeri, Malek Taher Maghsoodlou |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
010405 organic chemistry
Component (thermodynamics) General Chemistry Pyrazole 010402 general chemistry Heterogeneous catalysis 01 natural sciences Recyclable catalyst 0104 chemical sciences Catalysis lcsh:Chemistry chemistry.chemical_compound chemistry lcsh:QD1-999 Nano Organic chemistry Thin film Reusability |
| Zdroj: | Journal of Saudi Chemical Society, Vol 21, Iss 8, Pp 998-1006 (2017) |
| ISSN: | 1319-6103 |
| Popis: | The present methodology describes two efficient, eco-friendly, and simple routes for the cascade synthesis of biologically relevant pyrazole scaffolds using Ag/TiO2 nano-thin films as a green, robust, and recyclable catalyst. Ag/TiO2 nano-thin films were successfully applied for the synthesis of bis (pyrazol-5-ol) and dihydropyrano[2,3-c]pyrazole derivatives in the one-pot, multicomponent manner. These operationally straightforward procedures have merits, including high yields of products from a simple set of readily available starting materials, eco-friendliness, and heterogeneity and reusability of catalyst. Also, it was observed that the catalyst was highly stable during the reaction and several reuse times without observable losses in catalytic performance. Keywords: Ag/TiO2 nano-thin films, Bis (pyrazol-5-ols), Dihydropyrano[2,3-c]pyrazoles, Eco-friendliness |
| Databáze: | OpenAIRE |
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