Inhibiting effect of fullerenes C<Subscript>60</Subscript> and C<Subscript>70</Subscript> on high-temperature oxidative degradation of copolymers of methyl methacrylate with methacrylic acid and methacrylamide

The inhibiting effect of fullerenes on thermal oxidative degradation of copolymers of methyl methacrylate with methacrylic acid and methacrylamide at 340°C was studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2047–2049.Original Russian Text Copyright © 2004 by Troitskii, Khokhlova, Konev, Denisova, Novikova.     

Preparative synthesis of (<Emphasis Type="Italic">Z</Emphasis>)-5-decenyl acetate

A procedure was developed for preparative synthesis of (Z)-5-decenyl acetate, the sex hormone of Agrotis Segetum.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2061–2062.Original Russian Text Copyright © 2004 by Chobanyan.     

Solubility in the NaCl-(C<Subscript>2</Subscript>H<Subscript>5</Subscript>)<Subscript>2</Subscript>NH-H<Subscript>2</Subscript>O System at 50°C

The solubility in the system NaCl-(C₂H₅)₂NH-H₂O at 50°C was studied. The shape of the solubility isotherm was analyzed.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 11, 2004, pp. 1912–1913.Original Russian Text Copyright © 2004 by Panasenko, Mazunin.     

A procedure for preparing <Emphasis Type="Italic">N</Emphasis>-hydroxyethyl-substituted succinimide and phthalimide

Conditions of synthesis of N-hydroxyethyl-substituted succinimide and phthalimide by reactions of dicarboxylic acid imides with aminoethanol were optimized.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2059–2060.Original Russian Text Copyright © 2004 by Gasanov, Allakhverdiev.     

Sorption of light fullerenes C<Subscript>60</Subscript> and C<Subscript>70</Subscript> on NORIT-AZO carbon

Sorption of fullerenes C₆₀ and C₇₀ from o-xylene, toluene, and dichlorobenzene solutions on NORIT-AZO carbons was studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1638–1642.Original Russian Text Copyright © 2004 by Semenov, Seregin, Arapov, Charykov.     

Bleaching of kraft cellulose by the ClO<Subscript>2</Subscript>-H<Subscript>2</Subscript>O<Subscript>2</Subscript> scheme

The influence of conditions of a two-stage treatment of deciduous and coniferous kraft cellulose (by the ClO₂-H₂O₂ scheme) on the degree of its delignification and bleaching was studied. The optimum ratio of reagents in each stage of the treatment was elucidated.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1735–1738.Original Russian Text Copyright © 2004 by Shcherbakova, Demin.     

Extaction of lanthanide (III) nitrates from aqueous solutions with <Emphasis Type="Italic">n</Emphasis>-octanol

Extraction of lanthanide(III) nitrates (Ln-Gd) with n-octanol was studied at 298.15 K. The extraction isotherms were obtained and mathematically treated.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1571–1572.Original Russian Text Copyright © 2004 by Keskinov, Kudrova, Valueva, Pyartman.     

Sample pretreatment and chromatographic determination of benz[<Emphasis Type="Italic">a</Emphasis>]pyrene in wastewater

A procedure was developed for gas-chromatographic determination of benz[a]pyrene in wastewater, with similar pretreatment of reference solutions used for plotting the calibration diagrams and of real wastewater.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004, pp. 1392–1394.Original Russian Text Copyright © 2004 by Kayutkina, Platonov, Bulanova.     

Preparation of α-Fe<Subscript>2</Subscript>O<Subscript>3</Subscript> by thermal hydrolysis of iron(III) basic sulfate

Features of the hydrolytic transformation of iron(III) basic sulfate under hydrothermal conditions at 140–200°C were studied. The influence of the conditions of the hydrothermal treatment of iron(III) basic sulfate on the rate and degree of its hydrolysis was examined. The chemical and phase composition of metastable intermediates was ascertained, and conditions for the formation of the final product of thermal hydrolysis, hematite of high phase purity, were determined.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1416–1420.Original Russian Text Copyright © 2004 by Eshchenko, Salonikov.     

Interaction of Tri-<Emphasis Type="Italic">n</Emphasis>-butyl phosphate,water, and phosphoric acid in purification of wet-process phosphoric acid

The material balance of water, phosphoric acid, and tri-n-butyl phosphate in the real process of purification of wet-process phosphoric acid by TBP extraction was studied. A process mechanism was suggested.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1618–1620.Original Russian Text Copyright © 2004 by Lembrikov, Konyakhina, Volkova, Lobova, Pokidova.     

<Emphasis Type="Italic">N</Emphasis>-arylsulfinyl-1,4-benzoquinonimines

Stable N-arylsulfinyl-1,4-benzoquinonimines were synthesized by acylation of the corresponding 1,4-benzoquinone monooximes with arenesulfenyl chlorides. The process involves transformation of sulfur(II) into sulfur(IV).Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 9, 2004, pp. 1340–1343.Original Russian Text Copyright © 2004 by Avdeenko, Pirozhenko, Stanovskii, Konovalova, Yusina.This study was performed under financial support by the ES INTAS program (grant no. 00 157–1999) and by the Ministry of Education and Science of Ukraine.     

Methods for MgSiN<Subscript>2</Subscript> synthesis

Direct synthesis of MgSiN₂ from simple substances was performed in a flow-through system. The sequence of transformations that occur on heating mixed magnesium and silicon powders in flow of nitrogen was determined by X-ray phase analysis.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004, pp. 1241–1244.Original Russian Text Copyright © 2004 by Grekov, Chernovets.     

Identification of impurities accumulated in the extractant in the course of purification of wet-process phosphoric acid with tri-<Emphasis Type="Italic">n</Emphasis>-butyl phosphate

Impurities accumulated in the extractant in the course of operation of the plant for purification of wet-process phosphoric acid, obtained from apatite concentrate, by extraction with tri-n-butyl phosphate are identified by IR and mass spectra.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1425–1429.Original Russian Text Copyright © 2004 by Lembrikov, Konyakhina, Volkova, Perov, Kiseleva, Ershova.     

Synthesis of 4,5-dihydroisoxazoles from <Emphasis Type="Italic">N</Emphasis>-nitroso-4,5-dihydropyrazoles

N-Nitroso-4,5-dihydropyrazoles obtained from ethyl(methyl) 5-aryl-4,6-dioxo-1,3a, 4,5,6,6a-hexahydropyrrolo[3,4-c]pyrazole-3-carboxylates and ethyl(methyl) 7-aryl-6,8-dioxo-1,2,7- triazaspiro[4.4]non-2-ene-3-carboxylates eliminate nitrogen molecule on heating to afford the corresponding 4,5-dihydroisoxazole derivatives.Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 10, 2004, pp. 1561–1565.Original Russian Text Copyright © 2004 by Molchanov, Stepakov, Kostikov.     

Oxidation of aromatic compounds: XII. Regio- and stereoselective oxidative dimerization of alkyl 3-arylpropynoates in the system CF<Subscript>3</Subscript>CO<Subscript>2</Subscript>H-CH<Subscript>2</Subscript>Cl<Subscript>2</Subscript>-PbO<Subscript>2</Subscript>

Regio- and stereoselective oxidative dimerization of alkyl 3-arylpropynoates in the system CF₃CO₂H-CH₂Cl₂-PbO₂ (1–30 h, 0–20°C) leads to dialkyl (E)-2,3-bis(arylcarbonyl)-2-butene-1,4-dioates with trans arrangement of the substituents at the double bond.Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 9, 2004, pp. 1329–1333.Original Russian Text Copyright © 2004 by Savechenkov, Vasilev, Rudenko.For communication XI, see [1].     

Radical copolymerization of acrylic acid with derivatives of monoethanolamine vinyl ether and <Emphasis Type="Italic">o</Emphasis>- and <Emphasis Type="Italic">p</Emphasis>-chloranil

Radical copolymerization of derivatives of monoethanolamine vinyl ether and o- and p-chloranil with acrylic acid was studied. The parameter p for this system was determined by the Shtraikhman analytical graphic method; the copolymerization constants, Alfrey-Price specific activity and polarity parameters, probabilities of formation of various unit sequences in the macromolecular chain, lengths of sequences of similar monomeric units, and Harwood block structure parameters were calculated.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1689–1692.Original Russian Text Copyright © 2004 by Nikitina, Zhunusova, Shoinbekova, Mukhitdinova, Ergozhin.     

Reaction of allyl phenylcarbamate with benzaldehyde phenylhydrazones in the presence of <Emphasis Type="Italic">N</Emphasis>-chlorobenzenesulfonamide sodium salt

Phenylhydrazones derived from 4-bromo-, 4-methoxy-, and 3-nitrobenzaldehydes react with allyl phenylcarbamate in the presence of N-chlorobenzenesulfonamide sodium salt to give the corresponding 3-aryl-1-phenyl-5-(phenylcarbamoyloxymethyl)-4,5-dihydro-1H-pyrazoles whose structure was confirmed by the IR and ¹H and ¹³C NMR spectra.Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 10, 2004, pp. 1539–1541.Original Russian Text Copyright © 2004 by Velikorodov.     

Electrodeposition of CuSe<Subscript>x</Subscript> compounds onto carbon-containing electrodes

The electrodeposition of copper(II) and selenium(IV) onto pyrographite and carbon-pyroceramic electrodes in sulfate solutions was studied. The optimal conditions for obtaining a compound of composition Cu₂Se were found.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004, pp. 1289–1294.Original Russian Text Copyright © 2004 by Dergacheva, Chaikin, Grigoreva, Pantileeva.     

Complexation of Cu(II) with <Emphasis Type="SmallCaps">L</Emphasis>- and <Emphasis Type="SmallCaps">DL</Emphasis>-threonine: An ESR study

Complexation of Cu(II) ions with L- and DL-threonine in aqueous solution was studied. Treatment of the ESR spectra of solutions containing Cu(II) and threonine in various ratios and having various pH, involving total line shape analysis, revealed formation of geometric isomers of the complex ions [Cu(thrH_–1)₂]^2– differing in the mutual arrangement of the N and O atoms in the equatorial plane; the complexation and isomerization equilibrium constants were determined.Translated from Zhurnal Obshchei Khimii, Vol. 74, No. 8, 2004, pp. 1388–1391.Original Russian Text Copyright © 2004 by Statsenko, Bolotin, Panyushkin.This revised version was published online in April 2005 with a corrected cover date.     

Grafting of poly-<Emphasis Type="Italic">N</Emphasis>-methacryloylaminodeoxyglucose on poly-<Emphasis Type="Italic">N</Emphasis>-vinylpyrrolidone

A graft copolymer simulating glycoprotein was prepared by reaction of poly-N-methacryloylaminodeoxyglucose containing terminal amino group with a copolymer of N-vinylpyrrolidone and acrylic acid N-hydroxysuccinimide ester.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004, pp. 1356–1359.Original Russian Text Copyright © 2004 by Nazarova, Pavlov, Kever, Afanaseva, Panarin.