2,5-Disubstituted furans have been synthesized via the isomerization–dehydration of alkynediols catalysed by Pd2(dba)3·CHCl3, Bun3P and perfluorinated resinsulfonic acid at 130 °C in good yields; (H4dba = dibenzylideneacetone).
J. Ji and X. Lu, J. Chem. Soc., Chem. Commun., 1993, 764 DOI: 10.1039/C39930000764
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