Catalysis Letters, Vol.109, No.1-2, 61-64, 2006
Amino-functionalized ionic liquid as an efficient and recyclable catalyst for Knoevenagel reactions in water
The Knoevenagel condensation of aromatic aldehydes with malononitrile and ethyl cyanoacetate using amino-functionalized ionic liquid, 1-aminoethyl-3-methylimidazolium hexafluorophosphate as catalyst was successfully performed in aqueous media. The catalyst can be recycled and reused at least six times without apparently loss of activity. [GRAPHICS]