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Kulakova E.V.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic
Russian Journal of Electrochemistry | Year: 2011

Electrocatalytic hydrogenation of 5-, 8-nitroquinolines and 6,8-dinitroquinoline is carried out in a diaphragm cell in an alkaline medium on a copper cathode using skeleton catalysts (Ni, Cu, Fe, Zn). It is shown that the corresponding aminoquinolines are formed under the conditions used. No hydrogenation of the aromatic quinoline system occurs. © 2011 Pleiades Publishing, Ltd. Source


Ivanova N.M.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Makasheva G.K.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Kirilyus I.V.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Soboleva E.A.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic
Russian Journal of Electrochemistry | Year: 2011

The results of studies on the catalytic hydrogenation of picolinic acid on a cathode activated with skeleton catalysts (Ni, Co) was considered. The main hydrogenation product-2-piperidinecarboxylic acid-is shown to be formed with high ∼95.0-98.0% yields in weakly alkaline catholyte solutions at 40.0°C. © 2011 Pleiades Publishing, Ltd. Source


Kulakova E.V.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Ivanova N.M.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Kirilyus I.V.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Makasheva G.K.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic
Russian Journal of Electrochemistry | Year: 2011

Electrocatalytic hydrogenation of quinoline, quinoline N-oxide, 8-oxyquinoline, and 5,7-dibromo-8-oxyquinoline is studied in an aqueous alkali catholyte solution with the additive of organic solvents on skeleton catalysts (Ni, Co, Cu, Fe) used for cathode activation. It is shown that the main product of hydrogenation of quinoline and quinoline N-oxide is 1,2,3,4- tetrahydroquinoline, whereas that of hydrogenation of 8-oxyquinoline, and its dibromo derivative, is 1,2,3,4-tetrahydro-8-oxyquinoline. A conclusion is made on the basis of chromatographic analysis as to the consecutive-parallel processes of deoxidation and hydrogenation of the N-heterocycle under electrocatalytic reduction of quinoline N-oxide. © 2011 Pleiades Publishing, Ltd. Source


Ivanova N.M.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Soboleva E.A.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Visurkhanova Y.A.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic | Kirilyus I.V.,Institute of Organic Synthesis and Coal Chemistry of Kazakhstan Republic
Russian Journal of Electrochemistry | Year: 2015

Copper-containing composites of polyaniline were synthesized by introducing copper(II) chloride (with the reduction of copper cations with sodium borohydride and hydrazine hydrate and without it) in the oxidative polymerization of aniline (ammonium peroxydisulfate oxidant). The resulting polyaniline-copper composites were studied by IR spectroscopy, atomic force microscopy, and X-ray diffraction analysis. The more drastic increase in the rate of hydrogenation of p-nitroaniline and its conversion (compared with those of the electrochemical process on the Cu cathode) resulted from the activation of the cathode with polyaniline composites with the copper salt, whose cations were reduced to the metal phases in the electrochemical system. © 2015, Pleiades Publishing, Ltd. Source

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