One-Pot Synthesis of Substituted Piperidinones and 3,4-Dihydropyrimidinones Using a Highly Active and Recyclable Supported Ionic Liquid Phase Organocatalyst
AUSTRALIAN JOURNAL OF CHEMISTRY（2016）
摘要
1-Ethyl-3-methylimidazolium ethyl sulfate was synthesized and its supported ionic liquid phase form was prepared and used as an organocatalyst for the synthesis of substituted piperidinones and 3,4-dihydropyrimidinones. The ionic liquid was characterized by H-1 NMR, C-13 NMR, and mass spectrometry. The catalyst is novel, stable, completely heterogeneous, and recyclable for several times and can be easily recovered by filtration. It was characterized with scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and energy-dispersive X-ray spectroscopy techniques. The workup procedures are very simple, and products were obtained in good-to-excellent yields with reasonable purities without the need for further chromatographic purification.
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关键词
photochemistry,computational chemistry,nanotechnology,organic chemistry,self assembly,mass spectrometry,physical chemistry,ab initio calculations,pharmaceutical chemistry,green chemistry,reaction mechanisms,combinatorial,electrochemistry,kinetics,surface chemistry,analytical chemistry,biocatalysis,macromolecules,combinatorial chemistry,inorganic chemistry,sensors,structure,biosensors,density functional theory,biological chemistry,educational,medicinal chemistry,catalysis,interfaces,supramolecular chemistry,colloids,crystal structures,peptide,proteins,enzymes,polymer chemistry,spectroscopy,ionic liquids,crystallography,amino acids,quantum chemistry
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