Journal
TETRAHEDRON LETTERS
Volume 54, Issue 3, Pages 227-230Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.11.006
Keywords
Multi-component reactions; Synthesis; Ionic liquid; Pyrano[3,2-b]pyran
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Funding
- National Natural Science Foundation of China [21104064, 21172188]
- Natural Science Foundation of XuZhou Normal University [10XLR03, 11XLR13]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A series of 2-amino-4-aryl-4H,8H-6-methyl-8-oxo-pyrano[3,2-b]pyran derivatives have been synthesized efficiently from aromatic aldehyde, malononitrile or cyanoacetate, and 5-hydroxy-2-methyl-4H-pyran-4-one via an one-pot three-component reaction catalyzed by Et3N in ionic liquid [bmim]BF4. The present approach offers the advantages of short reaction time, mild reaction conditions, high yields, convenient operation, and reuse of ionic liquid. (c) 2012 Elsevier Ltd. All rights reserved.
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