Abstract
The reaction between dibenzoylacetylene and enol systems, such as acetylaceton or cyclohexane-1,3-dione in the presence of triphenylphosphine in THF/H2O, leads to 4-acetyl-3-benzoyl-1-phenyl-1,5-hexanedione and 2-hydroxy-3-(2-oxo-2-phenylethyl)-2-phenyl-3,5,6,7-tetrahydro-1-benzofuran-4(2H)-one. Subsequently, these compounds undergo cyclization and elemination reactions in acidic dichloromethane at room temperature to produce known highly functionalized furan derivatives.
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We are grateful to the University of Kurdistan Research Council for the partial support of this work.
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Nasiri, F., Bidar, M. & Atashkar, B. Two intermediates in the reaction between dibenzoylacetylene and enol systems in the presence of triphenylphosphine in THF/H2O. Monatsh Chem 140, 463–466 (2009). https://doi.org/10.1007/s00706-008-0075-5
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DOI: https://doi.org/10.1007/s00706-008-0075-5