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Yu. M. Atroshchenko N. K. Melekhina I. V. Shakhkel’dyan I. E. Yakunina A. N. Shchukin E. V. Shuvalova V. A. Subbotin 《Russian Journal of Organic Chemistry》2006,42(8):1220-1224
The electrophilic chlorine addition to 3-substituted 1,5-dinitro-3-azabicyclo[3.3.1]-non-6-enes in the tetrachloromethane is accompanied at an intramolecular 3,7-cyclization giving 6-chloro-3-R-1,5-dinitro-3-azoniatricyclo[3.3.1.03,7]nonane chlorides. The reaction of the tricyclic quaternary ammonium salts with sodium methoxide leads to the formation of dealkylated and dehydrohalogenated products, 3-substituted 8-chloro-1,5-dinitro-3-azabicyclo[3.3.1]non-6-enes, bicyclic products with a halogen atom in an allyl position with respect to the double bond. 相似文献
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N. T. Denisov S. A. Mironova N. I. Shuvalova A. E. Shilov 《Russian Chemical Bulletin》1998,47(10):2025-2027
The reduction of CO by the nitrogen-fixing systems Ti(OH)3−Mo(OH)3 and MgTi2O4−Mo(OH)3 was studied in aqueous and water-methanol media; in the latter,14CO was used as the reagent. The main reaction product is methanol, whose yield in the H2O−MeOH−KOH mixture is almost an, order of magnitude higher than that in an aqueous alkaline solution. The data obtained were
compared to those for the reduction of N2
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10 pp. 2081–2083, October, 1998. 相似文献
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A. V. Yudina M. P. Berezin G. R. Baymuratova N. I. Shuvalova O. V. Yarmolenko 《Russian Chemical Bulletin》2017,66(7):1278-1283
The specific features of the synthesis and the physicochemical properties of new nanocomposite polymer electrolytes (NPE) based on poly(ethylene glycol) diacrylate, a liquid electrolyte, and silicon dioxide were studied. The kinetics of polymerization of the system in question were studied by isothermal calorimetry and the optimal conditions for the hardening of the NPE were selected. The dependence of the conductivity of the electrolyte samples on the amount of SiO2 nanopowder introduced, the presence of preliminary ultrasonic treatment of the nanocomposite mixture before the synthesis, and the storage duration of the samples was studied using the electrochemical impedance method. The maximum conductivity (4.3?10–3 S cm–1 at 20 °C) was observed for samples without preliminary treatment with the introduction of 6 wt.% of SiO2 and for the samples after ultrasonic treatment with 8 wt.% of SiO2. The electrolyte films with the optimal SiO2 content of 4 wt.% maintained their properties for 24 months. 相似文献
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O. V. Yarmolenko G. Z. Tulibaeva G. N. Petrova A. F. Shestakov N. I. Shuvalova V. M. Martynenko O. N. Efimov 《Russian Chemical Bulletin》2010,59(3):510-516
Dependence of gassing upon decomposition of 1 M LiClO4 electrolyte in γ-butyrolactone (γBL) with various contents of water (0.008 and 0.2% w/w) at a lithium electrode on the current density of charging was studied. Quantum chemical modeling of γBL interaction with lithium surface was performed. The initial stage of γBL decomposition is the formation of a surface organolithium compound, which is hydrolyzed in the subsequent reactions with water. 相似文献
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E. V. Shuvalova O. A. Kirichenko G. I. Kapustin L. M. Kustov 《Russian Chemical Bulletin》2016,65(12):2850-2854
Monometallic and bimetallic copper-containing catalysts supported on silica gel KSKG were synthesized. The bimetallic Cu—Zn catalysts were most active and selective in the hydro-genation of p-dinitrobenzene (DNB) to p-phenylenediamine (PDA) (99% at 100% conversion of DNB). The highest activity and 99% selectivity to PDA at 100% DNB conversion were demonstrated by the monometallic catalysts with a Cu content of 9%. Unlike hydrogenation on the conventional catalysts, molecular H2 is the hydrogenating agent in the presence of the copper-containing catalysts under relatively mild conditions (110–140 °C, 1.3 MPa). 相似文献
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The activity of supported nickel catalysts (5–20% Ni) in the hydrogenation of p-dinitrobenzene to p-phenylenediamine was investigated. The catalysts were obtained by ureainduced precipitation. Activated carbon, alumina, titania, and silica gel were evaluated as supports. The most active catalysts, 5%Ni/TiO2 and 20%Ni/SiO2, provided 50–54% yields of p-phenylenediamine at complete dinitrobenzene conversion. 相似文献