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Two intermediates in the reaction between dibenzoylacetylene and enol systems in the presence of triphenylphosphine in THF/HO

Monatshefte fur Chemie, ISSN: 0026-9247, Vol: 140, Issue: 4, Page: 463-466
2009
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The reaction between dibenzoylacetylene and enol systems, such as acetylaceton or cyclohexane-1,3-dione in the presence of triphenylphosphine in THF/HO, 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. © 2008 Springer-Verlag.

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