A. A. Glazkov

Addition of thiols to ethyl 4,4,4-trifluorocrotonate

Ethyl 4,4,4-trifluorocrotonate 1 readily adds aliphatic and aromatic thiols and aminothiols at the double bond in the presence of catalytic amounts of alkylamines and ammonia to give 3-thiolation products. Thiolacetic acid reacts with ester 1 in the absence of a catalyst at 100 °C.

Cycloaddition of perfluorovinyl ethers to dienes

ConclusionsCycloaddition of perfluorovinyl ethers to butadiene or piperylene led to 1-vinyl- or 1-propenyl-2-perfluoroalkoxy-2,3,3-trifluorocyclobutanes as mixtures of cis and trans isomers.

Synthesis of 1,2,3,4-tetrachlorohexafluorobutane

The condensation of 1-iodo-1,2,2-trifluoro-1,2-dichloroethane induced by granulated Zn in the presence of catalytic amounts of AcOEt without a solvent results in 1,2,3,4-tetrachlorohexafluorobutane in high yield.

Synthesis of 1,1-dihydroperfluorooxaalkan-1-ols and their interaction with terephthaloyl chloride

A series of 1,1-dihydroperfluorooxaalkan-1-ols and α,α,ω,ω-tetrahydroperfluorooxaalkanediols has been synthesized. Some tercphthalates were synthesized by the reaction of these alcohols and diols with terephthaloyl chloride.

Characteristic features of cyclotrimerization of perfluoroalkyl- and perfluorooxaalkylacetylenes

Cyclotrimerization of perfluoroalkyl- and perfluorooxaalkylacetylenes has been studied under various conditions. A scheme of the reaction mechanim has been suggested.

Anionic coordination copolymerization of propylene oxide, carbon dioxide, and l-lactide

Terpolymers with various l-lactic acid content in the polypropylene carbonate chain were synthesized by copolymerization of carbon dioxide, propylene oxide, and l-lactide. Zinc adipate was used as a catalyst. Terpolymerization products were characterized by 1H and 13C NMR, 2D {1Н—13С} HMBC, IR spectroscopy, and gel-permeation chromatography. The influence of monomer molar ratio, temperature, and reaction duration on the composition and molecular-mass characteristics of terpolymers was studied. A few questions of terpolymerization mechanism were discussed.

Synthesis of perfluoroxaalkylenedivinyl ethers

ConclusionsSome features are given of the formation and structure of perfluoroxaalkylenedivinyl ethers obtained by the pyrolysis of salts of perfluoroxaalkylenedicarboxylic acids. The nature of the side products was established by spectral methods.

Reactions of perfluorooxaalkyl ketones with nucleophiles

1. Branched perfluorooxaalkyl groups have less steric influence on the reaction of their ketones with nucleophiles than does the perfluoroisopropyl group. 2. The course of the haloform reaction of branched perfluorooxaalkyl ketones is determined by the size and branching of the perfluorooxaalkyl group attached to the keto group. 3. The erythro and threo isomers of these ketones are cleaved at different rates in this reaction.

Reactions of perfluorovinyl ethers under the action of fluorine ions

1. The transformations of perfluoromethylvinyl and perfluoromethoxypropylvinyl ethers in the presence of ionic fluorides in aprotonic solutions have been studied. 2. In the absence of perfluoroolefins, prefluorovinyl ethers do not form dimers with unsaturated bonds, but are transformed into perfluoroetheroketones as the result of a series of successive reactions.