mercaptans, thioethersmercaptans, thioethers (acyclic compounds) P 0430
-094Reactions of α-Fluorine-Containing β-Functionalized Vinyl Sulfides with N-Nucleophiles.-The reaction of vinyl sulfides (I) with primary or secondary amines proceeds with fluorine substitution to afford α-aminovinyl sulfides in good yields. These can undergo thermal cyclization to quinolinones under incorporation of the ester group. Incorporation of the trifluoromethyl group into cyclization of β-cyano-β-trifluoromethylvinyl sulfides [e.g. (IIIb)] affords 4-fluoroquinolines, which are not stable and hydrolyze to quinolinones. The reactions with arylhydrazines (V), (VII) and amidines (IX) directly proceed with cyclization at the functional group. -(KOVREGIN, A. N.; SIZOV, A. YU.; ERMOLOV, A. F.; Russ.