A. Arcadi et al., THE PALLADIUM-CATALYZED SYNTHESIS OF 2,3,5-TRISUBSTITUTED FURANS FROM2-PROPARGYL-1,3-DICARBONYL COMPOUNDS AND VINYLIC OR ARYL TRIFLATES ORHALIDES, Tetrahedron letters, 34(17), 1993, pp. 2813-2816
The palladium-catalysed cyclization of 2-propargyl-1,3-dicarbonyl comp
ounds with vinylic or aryl triflates or halides in the presence of pot
assium carbonate produces 2,3,5 trisubstituted furans in good yield.