| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5270115 | Tetrahedron Letters | 2010 | 5 Pages |
Abstract
New room-temperature ionic liquids were synthesized from natural and easily available feedstocks (choline hydroxide and amino acids) following an economical and green route in which the only by-product was water. They were successfully applied as catalysts for the Knoevenagel test reaction between benzaldehyde and different active methylene compounds, at room temperature and under solvent-free conditions, to produce α,β-unsaturated carbonyl compounds, exhibiting good conversions and high selectivities. The catalytic role of cholinium and aminoacetate ions in the Knoevenagel condensation is discussed.
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Authors
P. Moriel, E.J. GarcÃa-Suárez, M. MartÃnez, A.B. GarcÃa, M.A. Montes-Morán, V. Calvino-Casilda, M.A. Bañares,