NOVEL BRONSTED ACIDIC IONIC LIQUID L-PYRROLIDINE2-CARBOXYLIC ACID SULFATE: AN EFFICIENT AND ECOFRIENDLY CATALYST FOR SYNTHESIS OF 2,4,5-
TRISUBSTITUTED-1H-IMIDAZOLES UNDER SOLVENT FREE
CONDITIONS
V. W. Godse, S. N. Darandale, S. S. Rindhe, Y. R. Parandkar, R. D. Desai, B. H. Zaware, S. S. Jadhav, R. P. Pawar.
Abstract
A simple, highly efficient and eco-friendly protocol for the synthesis of bioactive 2,4,5-trisubstituted-1H-imidazoles via one-pot three component
condensation of benzil, aromatic aldehydes and ammonium acetate under solvent free conditions has been achieved utilizing the novel Bronsted
acidic ionic liquid, (L-pyrrolidine-2-carboxylic acid sulfate) as catalyst. The distinguishing features of this methodology are excellent yields in
shorter reaction time, cleaner reaction profile, and environmentally friendly nature, use of non-toxic, easily synthesizable, inexpensive catalyst.
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