Zeolite anchored Zr-ZSM-5 as an eco-friendly, green, and reusable catalyst in Hantzsch synthesis of dihydropyridine derivatives
| Autor: | Naresh Dhachapally, Chinna Rajanna Kamatala, Ramesh Kola, Uppalaiah Kusampally |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Chemistry
Dihydropyridine 02 engineering and technology Carbon-13 NMR 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Acetoacetanilide 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound Ethyl acetoacetate Pyridine medicine Organic chemistry General Materials Science ZSM-5 0210 nano-technology Zeolite medicine.drug |
| Zdroj: | Materials Chemistry and Physics. 242:122497 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2019.122497 |
| Popis: | In this study, the authors have developed a simple and eco-friendly metal switch over Zeo-catalyst Zr-ZSM-5. It is an efficient and novel reusable heterogeneous solid catalyst for one pot multi component synthesis of triphenyl pyridine- 3, 5-dicarboxamide, and 2,6-dimethyl-1,4- dihydropyridine-3,5-dicarboxylate from Acetoacetanilide/ethyl acetoacetate, ACOONH4/NH4OH and various Aromatic Aldehydes. Reactions afforded very good product yields (87–95%) in a short reaction time (27–35 min) in ethanol at an appropriate temperature. Prepared catalyst was comfortably recycled for four to five times (4–5 runs) without significant loss of catalytic activity. Zr-ZSM-5 is also used as a green catalyst for the combinatorial syntheses of dihydropyridine. The solid catalyst was characterized by XRD, SEM/EDS and BET SA-PSD, and the resulting substituted dihydropyridine derivatives were characterized and confirmed by 1H and 13C NMR, IR, and elemental spectral data. |
| Databáze: | OpenAIRE |
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