期刊
TETRAHEDRON LETTERS
卷 54, 期 35, 页码 4633-4636出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.06.050
关键词
4-Hydroxy-2-quinolone; Ionic liquid; Meldrum's acid; Reusable catalyst; Multicomponent reaction
资金
- Research Council of the University of Guilan
The synthesis of novel 4-substituted-3,4-dihydro-6H-pyrano[3,2-c]quinoline-2,5-diones was accomplished efficiently via a three-component reaction between 4-hydroxyquinoline-2-one, Meldrum's acid, and an alkyl or arylaldehyde under catalysis by [Bmim]HSO4. The ionic liquid catalyst offers the advantage of realizing the synthesis of the title products at ambient temperature and widens the scope of the reactants to include aliphatic aldehydes with respect to the catalysts already applied for similar syntheses. (C) 2013 Elsevier Ltd. All rights reserved.
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