Nickel containing ionic liquid based ordered nanoporous organosilica: a powerful and recoverable catalyst for synthesis of polyhydroquinolines
| Autor: | Hamideh Khanmohammadi, Dawood Elhamifar, Davar Elhamifar |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
010405 organic chemistry Scanning electron microscope Nanoporous General Chemical Engineering chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Mesoporous organosilica Nickel chemistry.chemical_compound Chemical engineering chemistry Transmission electron microscopy Ionic liquid Selectivity |
| Zdroj: | RSC Advances. 7:54789-54796 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra10758g |
| Popis: | A novel nickel containing alkyl-imidazolium ionic liquid based ordered mesoporous organosilica (Ni@IL-OMO) is prepared, characterized and applied as an efficient nanocatalyst in the one-pot synthesis of polyhydroquinolines through the Hantzsch reaction. The Ni@IL-OMO was prepared via immobilization of nickel chloride on IL-OMO at room temperature. This was characterized using transmission electron microscopy (TEM), FTIR-spectroscopy, nitrogen adsorption–desorption analysis, scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) spectroscopy. The polyhydroquinolines were obtained in high to excellent yield and selectivity in the presence of a low loading of Ni@IL-OMO with short reaction times. This catalyst was recovered and reused several times while keeping its efficiency under the applied conditions. The recovered catalyst was analyzed by TEM to study its structural stability during reaction process. |
| Databáze: | OpenAIRE |
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