Covalently anchored tertiary amine functionalized ionic liquid on silica coated nano-Fe3O4 as a novel, efficient and magnetically recoverable catalyst for the unsymmetrical Hantzsch reaction and Knoevenagel condensation
| Autor: | Xiao-Ming Ma, Qiang Zhang, Xin Zhao, Huai-Xin Wei, Jun Luo |
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| Rok vydání: | 2017 |
| Předmět: |
Tertiary amine
010405 organic chemistry General Chemical Engineering Inorganic chemistry Nanoparticle General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Elemental analysis Covalent bond Ionic liquid Polymer chemistry Nano Knoevenagel condensation |
| Zdroj: | RSC Advances. 7:53861-53870 |
| ISSN: | 2046-2069 |
| Popis: | A novel magnetic nanoparticle supported basic ionic liquid was successfully prepared by covalently anchoring 1-(2′-piperidyl)ethyl-3-(3-propyltriethoxysilane)imidazolium chloride onto the surface of silica-coated Fe3O4 nanoparticles, and characterized by FT-IR, TEM, XRD, TGA, VSM and elemental analysis. The obtained supported ionic liquid was certified as a versatile and robust catalyst for the unsymmetrical Hantzsch reaction and Knoevenagel condensation under solvent-free conditions. Furthermore, the catalyst could be conveniently recovered by an external magnet and reused six times without significant loss of catalytic activity. |
| Databáze: | OpenAIRE |
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