S 45 Selective sorption of gold (III), platinum (IV) and palladium (II) [] : доклад, тезисы доклада / S. Yu. Bratskaya, A. V. Pestov, A. Slobodyuk, V. A. Avramenko, Yu. G. Yatluk // EUCHIS 2009 - 9th International Conference of the European Chitin Society , Venice, Italy, 23-26 May 2009 : conference book. - Venice, Italy, 2009. - 146 (P03-13) Рубрики: ХИМИЧЕСКИЕ НАУКИ |
Т 42 Тиокарбамоилхитозан - селективный сорбент ионов платины (II) и палладия(II) [] = Thiocarbamoylchitosan - selective sorbent of ions of platinum (IV) and palladium : доклад, тезисы доклада / А. В. Пестов, С. Ю. Братская, А. Б. Слободюк, В. А. Авраменко, Ю. Г. Ятлук // Современные перспективы в исследовании хитина и хитозана : материалы IX Международной конф., Ставрополь, 13-17 окт. 2008 г. : докл. - Ставрополь, 2008. - С. 85-87. - Библиогр.: с. 87 (6 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ |
F 76 Formation of polynuclear palladium complexes with the benzimidazole-2-thiolate anion [Electronic resource] / M. O. Talismanova, A. A. Sidorov, G. G. Aleksandrov, V. N. Charushin, S. K. Kotovskaya, I. L. Eremenko, I. I. Moiseeva // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 1. - P47-55 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The reactions of palladium(II) salts with 2-mercaptobenzimidazole (HL) and its 5,6-difluorinated derivative (HLF) were investigated. In the presence of hydrochloric acid, PdCl2 and K2PdCl4 react with HL and HLF in the ethanol—water and acetonitrile—water systems to form the mono-nuclear dicationic complexes [Pd(HL)4]Cl2 (1) and [Pd(LF)4]Cl2 (2). In the absence of HCl, the reactions afford the tetranuclear complex Pd4[(L)2(3-S,N-(L))2(S,N-(L))4] (3). The reaction of triethylamine with an ethanolic solution of 3 leads to degradation of 3 and the formation of the lantern-type dinuclear complex Pd2[2-(L)4] (4), in which the palladium atoms are in the nonequivalent coordination environment, PdN4 and PdS4. The reaction of K2PdCl4 with HL or HLF in the THF—water or acetonitrile—water systems (for the reaction with HLF) in the presence of Et3N produces the lantern-type dinuclear complexes Pd2[(?S,N-(L3))4] and Pd2[(S,N)(LF))4] (5), in which the metal atoms are in the equivalent coordination environment (cis-PdN2S2) \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (1), 47.pdf |
A 89 Asymmetric cyclopalladation of 6-ferrocenyl-2,2-bipyridine and 2-ferrocenyl-1,10-phenanthroline [Electronic resource] / L. A. Bulygina, V. I. Sokolov, I. A. Utepova, V. L. Rusinov, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2007. - Vol. 56, № 5. - P1080-1082 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Cyclopalladation of 6-ferrocenyl-2,2?-bipyridine and 2-ferrocenyl-1,10-phenanthroline in the presence of the N-acylamino acid salt as the asymmetric catalyst was performed. Some reactions of the resulting bicyclic palladium derivatives with tridentate (N,N,C) ligands were studied \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2007, 56 (5), 1080-1082.pdf |
C 52 Chiroptical properties and new derivatives of cyclopalladated 6-ferrocenyl-2,2-bipyridine. Molecular structure of a tert-butyl isocyanide derivative [Electronic resource] / L. A. Bulygina, Z. A. Starikova, K. K. Babievskii, I. A. Utepova, V. L. Rusinov, O. N. Chupakhin, V. I. Sokolov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 10. - P2214-2216 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Optically active cyclopalladated 6-ferrocenyl-2,2?-bipyridine has been studied by circular dichroism and luminescent spectroscopy; a replacement of the chloride ion at palladium with the rhodanide ion and tert-butyl isocyanide molecule has been carried out; molecular structure of the product in the latter case has been determined by X-ray diffraction analysis \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (10), 2214-2216.pdf |
N 10 N-(2-(2-Pyridyl)ethyl)chitosan (PEC) for Pd(II) and Pt(IV) sorption from HCl solutions [] / L. A. Santos Sorena, M. Ruiz, A. V. Pestov, A. M. Sastre, Yu. G. Yatluk, E. Guibal // Cellulose. - 2010. - 6 December. - Online first : рис., табл. Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Chitosan was modified by grafting 2-pyridyl-ethyl moieties on the biopolymer backbone for the synthesis of a Platinum Group Metal (PGM) sorbent. The sorbent was tested for Pd(II) and Pt(IV) sorption from HCl solutions. Stable for HCl concentrations below 0.5 M, the sorbent reached sorption capacities as high as 3.2 and 2.6 mmol metal g1 for Pd(II) and Pt(IV), respectively. Metal sorption mainly proceeds by electrostatic attraction in acidic solutions, though a contribution of complexation mechanism cannot be totally rejected. The resistance to intraparticle diffusion is the main controlling mechanism for uptake kinetics. While agitation speed has a limited effect on kinetics, metal concentration and sorbent dosage have a greater effect on the kinetic profiles. The intraparticle diffusivity varies between 3 10?11 and 4.5 1010 m2 min1. Thiourea (combined with HCl solution) is used for Pd(II) and Pt(IV) desorption. The resin could be desorbed and recycled for a minimum of five cycles maintaining high efficiencies of sorption and desorption |
T 45 Thiocarbamoyl chitosan as a novel sorbent with high sorption capacity and selectivity for the ions of gold(III), platinum(IV), and palladium [Electronic resource] / A. V. Pestov, S. Yu. Bratskaya, A. Slobodyuk, V. A. Avramenko, Yu. G. Yatluk // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 7. - P1303-1306 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CHITOSAN -- THIOCARBAMOYL CHITOSAN -- IONS OF GOLD(III) Аннотация: Thiocarbamoyl chitosan (TCC) was synthesized by grafting thiourea on chitosan backbone in eutectic composition of ammonium thiocyanate—thiourea. Insoluble products with the amno group functionalization degree of 0.3–1.1 can be prepared by varying the conditions of polymer-analogous (synthesis in a gel) transformation. Structure of the synthesized chitosan derivatives was characterized by elemental analysis, diffuse reflectance infrared spectroscopy, and the solid state 13C NMR. Study of sorption properties of TCC shows high sorption capacity and selectivity for the ions of gold(III), platinum(IV), and palladium(II) as evidenced by results obtained at pH 2 in the presence of 100–1000-fold excess of iron(III), copper(II), zinc(II), and nickel(II). Sorption capacity of TCC for all ions increases with the increase in the degree of substitution and changes in the series: AuIII > PdII > PtIV \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (7), 1303-1306.pdf |
P 17 Palladium and platinum sorption on a thiocarbamoyl-derivative of chitosan [Text] / A. Butewicz, K. Campos Galivan, A. V. Pestov, Yu. G. Yatluk, A. W. Trochimczuk, E. Guibal // Journal of Applied Polymer Science . - 2010. - Vol. 116, № 6. - P3318-3330 : рис. Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Immobilizing thiourea onto chitosan allowed using the polymer for the recovery of platinum groups metals (PGMs) in acidic solutions (up to 1–2M HCl concentrations). At low HCl concentration protonated amine groups may sorb chloroanionic metal species (electrostatic attraction mechanism); however, most of sorption proceeds through chelation on sulfur containing groups (less sensitive to acidic conditions). The bi-site Langmuir equation was used for fitting sorption isotherms. The sorption of PGMs was weakly affected by the composition of the solution (presence of high concentration of anions and base metals). Maximum sorption capacities for Pd(II) and Pt(IV) ranged between 274 and 330 mg g?1 in 0.25M HCl solutions and decreased to 150–198 mg g?1 in 2M HCl solutions: Pd(II) sorption was systematically higher than Pt(IV) sorption. The pseudo-second rate equation was used for modeling the uptake kinetics. Agitation speed hardly affected uptake kinetics indicating that external diffusion resistance is not the rate controlling step. Desorption yield higher than 85% were obtained using thiourea in 0.1M HCl solution. The adsorbents could be reused for at least three cycles |
S 98 Synthesis and X-ray diffraction study of palladium(II) 1,3-diphenyl-5-(benzothiazol-2-yl)formazanate [Text] / A. V. Zaidman, I. G. Pervova, Z. G. Rezinskikh, I. N. Lipunov, P. A. Slepukhin // Crystallography Reports. - 2010. - Vol. 55, № 3. - P424-427 : рис., табл. Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The behavior of 1,3-diphenyl-5-(benzothiazol-2-yl)formazan as a bidentate ligand in the synthesis of the mononuclear palladium complex was investigated using slow diffusion. According to the X-ray diffraction study, the PdN4 coordination unit has a distorted square structure. The ligands form two six-membered chelate rings formed through the N1 and N4 atoms of the formazan fragment |
N 10 N-(2-(2-Pyridyl)ethyl)chitosan (PEC) for Pd(II) and Pt(IV) sorption from HCl solutions [Text] / L. A. Santos Sorena, M. Ruiz, A. V. Pestov, A. M. Sastre, Yu. G. Yatluk, E. Guibal // Cellulose. - 2011. - Vol. 18, № 2. - P309-325. - Bibliogr. : p. 324-325 (32 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Chitosan was modified by grafting 2-pyridyl-ethyl moieties on the biopolymer backbone for the synthesis of a Platinum Group Metal (PGM) sorbent. The sorbent was tested for Pd(II) and Pt(IV) sorption from HCl solutions. Stable for HCl concentrations below 0.5 M, the sorbent reached sorption capacities as high as 3.2 and 2.6 mmol metal g?1 for Pd(II) and Pt(IV), respectively. Metal sorption mainly proceeds by electrostatic attraction in acidic solutions, though a contribution of complexation mechanism cannot be totally rejected. The resistance to intraparticle diffusion is the main controlling mechanism for uptake kinetics. While agitation speed has a limited effect on kinetics, metal concentration and sorbent dosage have a greater effect on the kinetic profiles. The intraparticle diffusivity varies between 3 ? 10?11 and 4.5 ? 10?10 m2 min?1. Thiourea (combined with HCl solution) is used for Pd(II) and Pt(IV) desorption. The resin could be desorbed and recycled for a minimum of five cycles maintaining high efficiencies of sorption and desorption \\\\Expert2\\nbo\\Cellulose\\2011, v.18, p. 309.pdf |
A 10 A new anionic palladium(II) complex as a highly efficient cross-coupling catalyst [Text] : доклад, тезисы доклада / A. Mechaev, A. V. Pestov, Yu. G. Yatluk, M. G. Pervova, O. N. Chupakhin // 3rd EuCheMS Chemistry Congress "Chemistry - the Creative Force", Nuremberg, 29 august-02 ceptember2010. - Nuremberg, 2010. - P1353 : il. Рубрики: ХИМИЧЕСКИЕ НАУКИ |
N 10 N-(2-(2-Pyridyl)ethyl)chitosan (PEC) for Pd(II) and Pt(IV) sorption from HCl solutions / L. A. Santos Sorena, M. Ruiz, A. V. Pestov, A. M. Sastre, Yu. G. Yatluk, E. Guibal // Cellulose. - 2011. - Vol. 18, № 2. - С. 309-325 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CHITOSAN – PYRIDYL GROUPS -- PALLADIUM -- PLATINUM Аннотация: Chitosan was modified by grafting 2-pyridyl-ethyl moieties on the biopolymer backbone for the synthesis of a Platinum Group Metal (PGM) sorbent. The sorbent was tested for Pd(II) and Pt(IV) sorption from HCl solutions. Stable for HCl concentrations below 0.5 M, the sorbent reached sorption capacities as high as 3.2 and 2.6 mmol metal g?1 for Pd(II) and Pt(IV), respectively. Metal sorption mainly proceeds by electrostatic attraction in acidic solutions, though a contribution of complexation mechanism cannot be totally rejected. The resistance to intraparticle diffusion is the main controlling mechanism for uptake kinetics. While agitation speed has a limited effect on kinetics, metal concentration and sorbent dosage have a greater effect on the kinetic profiles. The intraparticle diffusivity varies between 3 ? 10?11 and 4.5 10?10 m2 min?1. Thiourea (combined with HCl solution) is used for Pd(II) and Pt(IV) desorption. The resin could be desorbed and recycled for a minimum of five cycles maintaining high efficiencies of sorption and desorption. ?? |
P 17 Palladium complex of 6-(2-hydroxy-5-methylphenyl)-3-(pyridin-2-yl)-1,2,4-triazin-5(2H)-one: Synthesis, structure, and catalytic activity / A. Mechaev, A. V. Pestov, P. A. Slepukhin, Yu. G. Yatluk, M. G. Pervova, M. A. Samorukova, O. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2011. - Vol.47, №9. - С. 1366-1369 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): HECK REACTION -- ARYL Аннотация: Palladium(II) complex with 6-(2-hydroxy-5-methylphenyl)-3-(pyridin-2-yl)-1,2,4-triazin-5(2H)-one was synthesized for the first time. The ligand was prepared from 3-(pyridin-2-yl)-1,2,4-triazin-5(2H)-one and 4-methylphenol via nucleophilic substitution of hydrogen (S (N) (H) reaction). The complex was readily soluble in basic medium, and it effectively catalyzed Mizoroki-Heck reaction \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2011, 47 (9), 1366.pdf |
P 17 Palladium(II)-Catalyzed Oxidative C–H/C–H Coupling and Eliminative SNH Reactions in Direct Functionalization of Imidazole Oxides with Indoles / M. V. Varaksin, I. A. Utepova, O. N. Chupakhin, V. N. Charushin // Journal of Organic Chemistry. - 2012. - Vol.77, №20. - С. 9087-9093 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): IMIDAZOLE OXIDES -- INDOLES Аннотация: Two novel synthetic approaches to realize the direct C(sp2)–H bond functionalization in cyclic nitrones are reported. Palladium(II)-catalyzed oxidative C–C coupling of 2,2-dialkyl-4-phenyl-2H-imidazole 1-oxides with indoles was shown to result in the formation of 5-indolyl-3-yl derivatives, while nucleophilic substitution of hydrogen (SNH) at C(5) of the same imidazole system was found to afford the corresponding deoxygenated compounds \\\\Expert2\\nbo\\Journal of Organic Chemistry\\2010, v.77, p.9087.pdf |
T 82 Trans-Dichlorobis{(1R,4S)-1,7,7-trimethyl-3-[(S)-α-methylbenzylimino]bicyclo[2.2.1]heptan-2-one-N}Palladium(II): Synthesis and structural examination [Electronic resource] / O. A. Zalevskaya, O. A. Gur'eva, L. L. Frolova, I. N. Alekseev, P. A. Slepukhin, A. V. Kuchin // Russian Journal of Coordination Chemistry. - 2013. - Vol.39, №1. - P37-40 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): PALLADIUM(II) -- SYNTHESIS -- STRUCTURAL EXAMINATION Аннотация: A reaction of (1R,4S)-1,7,7-trimethyl-3-[(S)-α-methylbenzylimino]bicyclo[2.2.1]heptan-2-one with lithium tetrachloropalladate gave a chiral palladium(II) complex with monodentate coordination of the organic ligand. The structure of the complex was confirmed by NMR spectra and X-ray diffraction data \\\\Expert2\\NBO\\Russian Journal of Coordination Chemistry\\2013, v. 39, N. 1, p.37.pdf |
M 65 Microwave-assisted palladium-catalyzed C–C coupling versus nucleophilic aromatic substitution of hydrogen (SNH) in 5-bromopyrimidine by action of bithiophene and its analogues [Электронный ресурс] / E. V. Verbitskiy, E. M. Cheprakova, E. F. Zhilina, M. I. Kodess, M. A. Ezhikova, M. G. Pervova, P. A. Slepukhin, V. N. Charushin // Tetrahedron. - 2013. - Vol.69, №25. - P5164-5172 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): C–H BOND ACTIVATIONS -- PYRIMIDINES -- PALLADIUM Аннотация: 5-Bromopyrimidine reacts with 2,2′-bithiophene, [2,2′:5′,2″]terthiophene and 2-phenylthiophene in the presence of a palladium catalyst to give 5-(het)aryl substituted pyrimidines due to the palladium-catalyzed aryl–aryl C–C coupling. However 5-bromo-4-(het)aryl-pyrimidines have been prepared from the same starting materials through the SNH-reaction catalyzed by a Lewis acid. Conditions for both types of reactions were optimized. All components of the reaction mixtures, including by-products, have been elucidated by gas–liquid chromatography/mass-spectrometry. Evidence for the structure of 4- and 5-bithiophenyl-substituted pyrimidines has first been obtained by means of X-ray crystallography analysis. Molecular orbital calculations (TDDFT), as well as the redox and optical measurements for all new compounds have also been performed \\\\Expert2\\NBO\\Tetrahedron\\2013, v. 68, p. 5164.pdf |
C 21 Carboxyethenylation of polychlorobiphenyls / A. Mechaev, A. V. Pestov, Yu. G. Yatluk, M. G. Pervova, A. A. Panyukova // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2013. - Vol.49, №5. - С. 691-695. - Библиогр.: с. 695 (12 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): BUTYL ACRYLATE -- PALLADIUM CATALYSTS -- POLYCHLOROBIPHENYLS Аннотация: For the first time 2-carboxyethenylation was performed with butyl acrylate in the presence of palladium catalysts of bromine derivatives of polychlorobiphenyls obtained by bromination of polychlorobiphenyls. The haloderivatives of the butyl phenylcinnamate are readily hydrolyzed and hydrodehalogenized affording a mixture of phenylhydrocinnamic acids \\\\expert2\\NBO\\Russian Journal of Organic Chemistry\\2013, 49, (5), 691-695.pdf |
C 52 Chiral palladium complexes with monoterpenoids oximes [Electronic resource] / O. A. Gur'eva, O. A. Zalevskaya, L. L. Frolova, I. N. Alekseev, P. A. Slepukhin, A. V. Kuchin // Russian Journal of General Chemistry. - 2014. - Vol.84, №1. - С. 137-142. - Bibliogr. : p. 142 (16 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CIS-VERBANONE -- MENTHONE -- OXIMES Аннотация: Oximes of cis-caran-4-one, 3α- and 3β-hydroxycaran-4-ones, cis-verbanone, menthone, and 2β-hydroxybornan-3-one have been synthesized. The obtained oximes react with lithium tetrachloropalladate to give new chiral palladium complexes containing mono-or bidentate oxime ligands \\\\expert2\\nbo\\Russian Journal of General Chemistry\\2014, V. 84, N 1, p. 137–142.pdf |
D 62 Direct C(sp2)-H Bond Functionalization in Cyclic Aldonitrones: Palladium(II)-Catalyzed Oxidative Cross-Coupling and Eliminative SNH Reactions / M. V. Varaksin, O. N. Chupakhin, V. N. Charushin, S. V. Mikhaylov, I. A. Utepova, B. A. Trofimov // 18th European Symposium on Organic Chemistry ESOC-2013, Marseille, France, 7-12 July 2013 : book of abstracts. - Marseille, France, 2013. - С. 329 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): PALLADIUM(II) -- SNH REACTIONS -- CYCLIC ALDONITRONES |
T 98 Two Approaches in the Synthesis of Planar Chiral Azinylferrocenes [Electronic resource] / I. A. Utepova, O. N. Chupakhin, P. O. Serebrennikova, A. A Musikhina, V. N. Charushin // Journal of Organic Chemistry. - 2014. - Vol. 79, № 18. - С. 8659-8667. - Bibliogr. : p. 8666-8667 (34 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CHIRAL AZINYLFERROCENES -- CROSS-COUPLING REACTION -- HALOGENATED AZINES Аннотация: Two synthetic routes to the chiral azinylferrocenes (CAFs) 5 and 15, key intermediates for the synthesis of new enantiomerically enriched P,N-ligands, have been compared. The first approach is based on the palladium-catalyzed cross-coupling reaction of halogenated azines with organozinc derivatives of ferrocenes (the Negishi reaction). The second approach exploits a new synthetic methodology, which provides a shorter pathway, through the direct C–H functionalization of aromatics by the C–C coupling of halogen-free (hetero)arenes with lithium ferrocenes bearing stereogenic C and S atoms. The palladium complexes of P,N-ligands have been used as catalysts for the Tsuji–Trost reaction, which proceeds with high enantioselectivity to give allylic substitution products in good yields. \\\\expert2\\nbo\\Journal of Organic Chemistry\\2014, v.79, p.8659.pdf |