Azizi N, Dezfuli S, Hahsemi MM. Eutectic salt catalyzed environmentally benign and highly efficient Biginelli reaction.
ScientificWorldJournal 2012;
2012:908702. [PMID:
22649326 PMCID:
PMC3350898 DOI:
10.1100/2012/908702]
[Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Accepted: 11/21/2011] [Indexed: 11/24/2022] Open
Abstract
A simple deep eutectic solvent based on tin (II) chloride was used as a dual catalyst and environmentally benign reaction medium for an efficient synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives, from aromatic and aliphatic aldehydes, 1,3-dicarbonyl compounds, and urea in good-to-excellent yields and short reaction time. This simple ammonium deep eutectic solvent, easily synthesized from choline chloride and tin chloride, is relatively inexpensive and recyclable, making it applicable for industrial applications.
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