| Autor: |
Nahid Yaghmaeiyan, Mahdi Mirzaei, Abdolhamid Bamoniri |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Arabian Journal of Chemistry, Vol 16, Iss 8, Pp 105026- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1878-5352 |
| DOI: |
10.1016/j.arabjc.2023.105026 |
| Popis: |
Nano-SnCl4/γ-Al2O3 as a reusable and green heterogeneous catalyst was prepared by the reaction of tin tetrachloride with γ-alumina. This solid acid catalyst was characterized by fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), thermal gravimetric analysis (TGA) and Brunauer-Emmett-Teller (BET) analyses. Tetrahydropyridines were synthesized via the one-pot reaction of 4-substitutd anilines, ethylacetoacetate and 4-substituted aldehydes in the presence of optimized amount (0.06 g) of nano-SnCl4/γ-Al2O3 under thermal conditions (70 °C) in ethanol as a green solvent. The process had short reaction times (5–8 h), good to excellent yields (80–93%), simple work-up and easy purification technique (recrystallization through the hot ethanol). It was found that the catalyst could be reused for three times without any considerable loss of its activity. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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