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A library of novel trans -ethyl 5-aroyl-4-aryl-2-((arylsulfonyl)methyl)-4,5-dihydrofuran-3- carboxylates were synthesized regio- and stereoselectively in good yields by a three-component domino reaction of ethyl-3-oxo-4-(arylsulfonyl)butanoates, aromatic aldehydes and N- phenacylpyridinium bromide in presence of triethylamine in acetonitrile under heating. This transformation generates C-O, C-C and C=C bonds and presumably proceeds via an ,- unsaturated ketosulfonyl ester generation/Michael addition/intramolecular cyclisation domino sequence.

A facile regio- and stereoselective synthesis of trans-ethyl 5-aroyl-4-aryl-2-[(arylsulfonyl)methyl]-4,5-dihydrofuran-3-carboxylates