Reactions of 5-phenyl-2,3-dihydrofuran-2,3-dione with aromatic amines in anhydrous dioxane or methyl benzoylpyruvate with aromatic amines in the presence of sodium acetate in glacial acetic acid afforded (Z)-N-aryl-2-hydroxy-4-oxo-4-phenylbut-2-enamides.
Dehydrobromination of 2-(1,2-dibromoethyl)-1,3-dioxocyclanes with sodium amide in liquid ammonia provided cyclic acetals of propargyl aldehyde. Reactions of the resulting compounds with nitrile oxides and diazomethane afforded the corresponding isoxazole and pyrazole derivatives.
A simple approach to the synthesis of 1,3-diphenylpropene isomers was developed based on Fe(acac)3-catalyzed cross-coupling of (E)- and (Z)-1,3-dichloropropenes with phenylmagnesium bromide.
Conditions were determined for the synthesis of TiO2 mesoporous thin films on silicon by the solgel method in the version of coating by dipping silicon plates in a TiO2 sol (dip-coating).