Journal
TETRAHEDRON LETTERS
Volume 53, Issue 51, Pages 6977-6981Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.10.046
Keywords
Oxepine; Pyran; Chromene; Multicomponent reaction; Dialkyl acetylenedicarboxylate; Malononitrile
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Funding
- Iran University of Science and Technology (IUST)
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A new and efficient method has been developed for the synthesis of highly functionalized 2-amino-4H-pyran, 2-amino-4H-chromene, 2-amino-oxepine, and 2-hydroxy-oxepine derivatives through one-pot, three-component tandem reactions of structurally diverse 1,3-diketones, dialkyl acetylenedi-carboxylates, and malononitrile or ethyl cyanoacetate in the presence of a catalytic amount of Na2CO3 in ethanol. This efficient technique has the advantages of giving products in good to high yields, in short reaction times, and with a simple isolation procedure. (C) 2012 Elsevier Ltd. All rights reserved.
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