Abstract
A three-component reaction of 3-formyl chromones, dialkyl acetylenedicarboxylate, and isocyanides in the presence of POCl(3) was used as a highly efficient and practical approach for the synthesis of 3-amino-5-chromenyl-butenolides. High yields and high bond forming efficiency, and simple operations are the advantages of this method. Graphical abstract.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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4-Butyrolactone / analogs & derivatives*
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4-Butyrolactone / chemical synthesis
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Alkynes / chemistry*
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Amines / chemistry*
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Chromones / chemistry*
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Cyanides / chemistry
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Fatty Acids, Unsaturated / chemistry*
Substances
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Alkynes
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Amines
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Chromones
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Cyanides
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Fatty Acids, Unsaturated
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2-butynedioic acid
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butenolide
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4-Butyrolactone