Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 216, Issue -, Pages 364-369Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2016.01.056
Keywords
SO3H-containing ionic liquid; N,N-Diethyl-N-sulfoethanaminium hydrogen sulfate {[Et3N-SO3H]HSO4}; 3,4-Dihydropyrimidin-2-(1H)-one; 3,4-dihydropyrimidin-2-(1H)-thione; Arylaldehyde; beta-Ketoester
Funding
- Research Council of Payame Noor University [62370]
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In this paper, a novel SO3H-containing ionic liquid namely N,N-diethyl-N-sulfoethanaminium hydrogen sulfate ([Et3N-SO3H]HSO4) has been synthesized, and characterized by studying its FT-IR, H-1 NMR, C-13 NMR and mass spectra. Afterward, catalytic activity of the Bronsted acidic ionic liquid has been examined for the preparation of 3,4-dihydropyrimidin-2-(1H)-ones and 3,4-dihydropyrimidin-2-(1H)-thiones via the one-pot multi component reaction between arylaldehydes,beta-ketoesters and urea (or -thiourea) under solvent-free conditions. The results showed that [Et3N-SO3H]HSO4 was highly efficient catalyst for this reaction. (C) 2016 Elsevier B.V. All rights reserved.
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