A novel L-amino acid ionic liquid for quick and highly efficient synthesis of oxime derivatives - An environmental benign approach

A mild, efficient, and eco-friendly procedure for the conversion of aliphatic, alicyclic and aromatic carbonyl compounds into the corresponding oximes, was catalyzed by a novel imidazolium based ionic liquid coupled with amino acid (asparagine) (L-AAIL, L-Amino acid functionalized ionic liquid) catalytic system. The quantitative conversion of aryl and alkyl carbonyl compounds into the corresponding oximes was achieved by simply grinding at ambient temperature using 0.05 mmol of catalyst in 50 s. In addition, this L-AAIL catalyst exhibited good reusability for five consecutive trials without significant loss of its catalytic activity. (C) 2011 Production and hosting by Elsevier B.V. on behalf of King Saud University.