𝔖 Bobbio Scriptorium
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Synthesis, characterization, and catalytic activity of ionic liquids based on biosources

✍ Scribed by P. Moriel; E.J. García-Suárez; M. Martínez; A.B. García; M.A. Montes-Morán; V. Calvino-Casilda; M.A. Bañares

Book ID
104098088
Publisher
Elsevier Science
Year
2010
Tongue
French
Weight
375 KB
Volume
51
Category
Article
ISSN
0040-4039

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✦ Synopsis

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 a,b-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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## Abstract Synthesis, characterization, spectral and molecular parameters of some new room‐temperature ionic liquids (tetraalkylammonium bromotrichloro aluminum [R~4~N]^+^[AlCl~3~Br]^−^) have been studied in the present study. All synthesized ionic liquids were characterized by IR, ^1^H, ^13^C, an