Collect. Czech. Chem. Commun. 1992, 57, 2203-2207

New Substituted Difurylchalcones

Katarína Špirková and Štefan Stankovský

Department of Organic Chemistry, Slovak Technical University, 812 37 Bratislava


Preparation of 1-(5-substituted-2-furyl)-2-phenylsulfonyl-2-furoyl ethylenes (IIa-IId) using the Lehnert modification of Knoevenagel condensation, as well as substitution nucleophilic reactions of the 1-(5-bromo-2-furoyl)-2-phenylsulfonyl-2-furoyl derivative (IIa) with the corresponding phenolate, thiophenolate and secondary amines are described. IR, UV and 1H NMR spectra of final products are presented.