L. I. Komarova

Reaction of cyanurates with the epoxide ring

ConclusionsIn the case of the reaction of triphenylcyanurate and phenyl glycidyl ether, we showed that the oxirane rings may react at high temperature with the cyanurate rings to form isocyanurate fragments, which, in turn, react with excess epoxide to form oxazolidone rings.

Synthesis and Properties of Copoly(arylene ether ketones) with Side Reactive Groups

A number of amorphous copoly(arylene ether ketones) with side reactive groups (carboxyl and phthalimidine) have been synthesized via the nucleophilic substitution of a halogen atom in activated aryl halide. The said copolymers exhibit an increased onset temperature of softening (170–250°C) and good mechanical characteristics: in the case of films, the breaking strength is 88.5–119 MPa, while for plastics, the notched specific impact strength varies from 16 to 22 kJ/m2 and the bending strength is in the range of 135–217 MPa.

Structure of the dibenzoylphthalic acids obtained by condensation of pyromellitic dianhydride with benzene

A method has been developed for the isolation of 2,4-dibenzoylisophthalic and 2,5-dibenzoylterephthalic acids from the mixtures formed during the Friedel-Crafts condensation of pyromellitic dianhydride with benzene. The structure of the acids obtained has been investigated by PMR and DR speetroscopy. The ability of 2,5-dibenzoylterephthalic acid to undergo tautomeric interconversions (normal or cyclic forms) has been discovered.

Investigation of the reaction of thionyl chloride with dimethylformamide

1. The interaction of dimethylformamide with thionyl chloride was investigated at various temperatures. 2. At the beginning of the interaction of dimethylformamide with thionyl chloride, an unstable addition product of thionyl chloride at the carbonyl oxygen of dimethylformamide is formed

Chemical transformations of poly(arylene ether ketones) containing side functional groups

\begin{gathered} \hfill \\ [(CH_3 )_2 \mathop N\limits^ \oplus = C\begin{array}{*{20}c} / \\ \backslash \\ \end{array} \begin{array}{*{20}c} {O - SO - Cl} \\ H \\ \end{array} ]Cl^ \ominus \hfill \\ \end{gathered}

Comb-shaped homo- and copoly(arylene ether ketones) containing hydrophilic groups in side chains

3. The adduct of dimethylformamide with thionyl chloride initially formed decomposes along two competing pathways: with liberation of SO2 and formation of the immonium chloride chloride

The nature of active centers in cyclotrimerization of isocyanates catalyzed by the tertiary amine—α-oxide—proton donor system 1. The role of the proton donor

\begin{gathered} \hfill \\ [(CH_3 )_2 \mathop N\limits^ \oplus = C\begin{array}{*{20}c} / \\ \backslash \\ \end{array} \begin{array}{*{20}c} {Cl} \\ H \\ \end{array} ]Cl^ \ominus , \hfill \\ \end{gathered}