M. A. Kurykin

Anodic perfluoroalkylation of the enol acetate of ethyl acetoacetate

Electrochemical perfluoroalkylation of the enol acetate of ethyl acetoacetate was studied in the conditions of the Kolbe reaction. The yields of alkylation products depend on the competing adsorption of the enol acetate, the solvent, and perfluorocarboxylates on the surface of a platinum electrode.

Synthesis of 5-fluoro-2,4,6-tris(perfluoroalkyl)pyrimidines

Abstract5-Fluoro-2,4,6-tris(perfluoroalkyl)pyrimidines were synthesized by reactions of polyfluorinated iminoenamines with perfluorocarboxylic acid anhydrides and perfluorobutanoyl chloride.

Acylation of 2-methoxypropene with anhydrides and halides of perfluorocarboxylic acids in the presence of tertiary amines

Abstract3-Methoxy-1-(perfluoroalkyl)but-2-en-1-ones were synthesized byC-acylation of 2-methoxypropene with perfluorocarboxylic acid anhydrides, acid chlorides, and acid fluorides in the presence of tertiary amines.

Condensation of polyfluorinated β-diimines with aromatic aldehydes

Polyfluorinated 2-arylpyrimidines were synthesized by the reaction of polyfluorinated β-diimines with aromatic aldehydes.

Synthesis of methylvinylpolyfluoroalkoxysilanes by photoinitiated radical reaction of dialkoxy(methyl)vinylsilanes with perfluoro-4-methylpent-2-ene

A new method was elaborated for the synthesis of vinylsilanes with polyfluoroalkoxy substituents at the silicon atom using the photoinitiated radical reaction of dialkoxy(methyl)vinylsilanes with perfluoro-4-metliylpent-2-ene in the presence of di-tert-butyl peroxide at room temperature.

ISOMERIZATION OF MONOHYDROPERFLUOROALKENES

Isomerization of monohydroperfluoro-1-alkenes HC(CF2)nCF=CF2 (n = 2 to 8) catalyzed by Lewis bases or acids (CsF, KHF2, and SbF5) under conditions of thermodynamic control affords equilibrium mixtures of all of the possible isomers resulting from migration of the double bond along the carbon chain. Under conditions of kinetic control, isomerization through the action of SbF5 gives ω-H-perfluoro-2-alkenes. The substantially higher proportion ofcis-isomers in the resulting monohydroperfluoroalkenes than in their perfluorinated analogs has been attributed to the effect of an intramolecular hydrogen bond.

A convenient method for the synthesis of polyfluorinated β-diimines

The higher internal perfluoroak-2-enes react with ammonium hydroxide at atmospheric pressure to give the corresponding iminoenamines, whose further transformations yield heptafluoroacetylacetone analogs.