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Каталог книг и продолжающихся изданий
Сводный каталог иностранных периодических изданий, имеющихся в библиотеках УрО РАН
Сводный каталог отечественных периодических изданий, имеющихся в библиотеках УрО РАН
Каталог диссертаций и авторефератов диссертаций УрО РАН
Каталог препринтов УрО РАН (1975 г. - )
Имидж-каталог отечественных книг (до 2010 г.)
Имидж-каталог иностранных книг (до 2010 г.)
Алфавитно-предметный указатель (АПУ) ЦНБ УрО РАН
Публикации об УрО РАН
Изобретения уральских ученых
Интеллектуальная собственность (статьи из периодики)
Нанотехнологии
Демидовские премии
Гибель династии Романовых
История Урала
Личная библиотека С. В. Вонсовского
Книжная коллекция Шубиных
Труды Института высокотемпературной электрохимии УрО РАН
Труды Института истории и археологии УрО РАН
Труды сотрудников Института горного дела УрО РАН
Труды сотрудников Института органического синтеза УрО РАН
Труды сотрудников Института теплофизики УрО РАН
Труды сотрудников Института химии твердого тела УрО РАН
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Труды сотрудников ЦНБ УрО РАН
Публикации Черешнева В.А.
Публикации Чарушина В.Н.
Каталог библиотеки ИЭРиЖ УрО РАН
Электронная энциклопедия «Дискурсология»
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Solovyova Y. V., Pestov A. V., Puzyrev I. S., Pervova M. G., Kuznetsov V. A., Vlasov I. A., Artemiev G. A.
Заглавие : Synthesis of δ-Valerolactone Using Stable Hydrogen Peroxide Derivatives
Место публикации : Russian Journal of Organic Chemistry. - 2022. - Vol. 58, № 4. - С. 480-483
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The efficiencies of hydrogen peroxide derivatives in the Baeyer–Villiger oxidation of cyclopen­tanone to δ-valerolactone have been compared. The oxidants used were hydrogen peroxide in acetic, formic, or trifluoroacetic acid, magnesium and sodium monoperoxyphthalates, cumene hydroperoxide, and tert-butyl hydroperoxide. The oxidation was carried out in water, aqueous methanol, and water–ethyl acetate. Sodium and magnesium monoperoxyphthalates turned out to provide high conversion and selectivity under mild conditions.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shchegolkov E. V., Burgart Y. V., Elkina N. A., Perminova A. N., Saloutin V. I., Boltneva N. P., Serebryakova O. G., Rudakova E. V., Makhaeva G. F., Lushchekina S. V.
Заглавие : 3-(2-Arylhydrazono)-1,1,1-trifluro-3-(phenylsulfonyl)propan-2-ones as selective carboxylesterase inhibitors
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 1. - С. 158-164
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: We improved the synthetic procedure for 3-(2-arylhydrazono)-1,1,1-trifluro-3-(phenylsulfonyl)propan-2-ones and established their structure. The study of their esterase profile showed the absence of cholinesterase inhibition and the selectivity against carboxylesterase with micromolar activity exceeding the anticarboxylesterase activity of the diketone analog. Carboxylesterase inhibition data are consistent with molecular docking results. 3-(2-Arylhydrazono)-1,1,1-trifluro-3-(phenylsulfonyl)propan-2-ones exhibit a high radical-scavenging effect in the ABTS test exceeding that of Trolox.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gruzdev D.A., Vakarov S. A., Korolyova M. A., Tumashov A. A., Chulakov E.N., Ezhikova M. A., Kodess M. I., Levit G. L., Krasnov V. P., Bartashevich E. V.
Заглавие : Acylative kinetic resolution of racemic methyl-substituted cyclic alkylamines with 2,5-dioxopyrrolidin-1-yl (R)-2-phenoxypropanoate
Место публикации : Organic & biomolecular chemistry. - 2022. - Vol. 20, № 4. - С. 862-869
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The diastereoselective acylation of a number of racemic methyl-substituted cyclic alkylamines with active esters of 2-phenoxypropanoic acid was studied in detail. The ester of (R)-2-phenoxypropanoic acid and N-hydroxysuccinimide was found to be the most selective agent. The highest stereoselectivity was observed in the kinetic resolution of racemic 2-methylpiperidine in toluene at −40 °C (selectivity factor s = 73) with the predominant formation of (R,R)-amide (93.7% de). To explain the observed stereoselectivity, DFT modelling of the transition states in the reactions of the title acylating agent with 2-methylpiperidine and 2-methylpyrrolidine was performed. The calculated values were in good agreement with experimental data. It has been demonstrated that the acylation proceeds via a concerted mechanism, in which the addition of an amine occurs simultaneously with the elimination of the hydroxysuccinimide fragment. The high stereoselectivity of the (R,R)-amide formation is largely ensured by the lower steric hindrances in the transition states as compared to the formation of (R,S)-amide.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Alifkhanova L. M., Petrova Yu. S., Kuznetsova K. Ya., Zemlyakova E. O., Pestov A. V., Neudachina L.K.
Заглавие : Sorption selectivity of palladium(II) by poly(N-2-sulfoethylallylamine) under static and dynamic conditions
Место публикации : Russian Journal of Applied Chemistry. - 2022. - Vol. 95, № 3. - С. 451-459
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Andreikov E. I., Krasikova A. P., Pervova M. G., Kabak A. S.
Заглавие : Investigation of hydrogen transfer from coal tar pitch and petroleum pitches using a-methylstyrene as hydrogen acceptor
Место публикации : Chemistry for sustainable development. - 2022. - Vol. 30, № 5. - С. 446-454
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): a-methylstyrene--coal tar pitch--petroleum pitches
Аннотация: The reaction of hydrogen transfer from coal tar pitch and petroleum pitches to Α-methylstyrene with the formation of cumene was investigated in glass ampoules within the temperature range of 200-360 °C and reaction time of 15-60 min and when passing Α-methylstyrene through a layer of coal tar pitch. It is shown that the formation of non-chromatographable products of Α-methylstyrene condensation with polycyclic aromatic compounds of pitches occurs simultaneously. The dependences of Α-methylstyrene conversion, the selectivity for cumene and condensation products on the temperature and reaction time, the ratio of pitch/Α-methylstyrene are determined. The amount of hydrogen transferred from pitches to Α-methylstyrene was determined, and the results obtained were compared with the literature data on the transfer of hydrogen from pitches obtained using anthracene as a hydrogen acceptor.
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6.

Вид документа : Статья из журнала
Шифр издания : Г/F 33
Автор(ы) : Alifkhanova L. M., Lopunova K. Y., Marchuk A. A., Petrova Y. S., Pestov A. V., Neudachina L. K.
Заглавие : Features of sorption preconcentration of noble metal ions with sulfoethylated amino polymers
Место публикации : Russian journal of inorganic chemistry. - 2021. - Vol. 66, № 6. - С. 909-915
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Dependencies for the sorption of palladium(II), gold(III), and platinum(IV) chloro complexes from individual and binary solutions with sorbents based on sulfoethylated polyallylamine and poly(aminostyrene) have been obtained. It has been found that predominant sorption mechanism is complexation with functional groups of the sorbents for gold(III) and palladium(II) and ion exchange for platinum(IV). It has been shown that increase in the sulfoethylation degree of aminopolymer matrix leads to decrease of platinum(IV) sorption and therefore, to increase in palladium(II) sorption selectivity relative to this ion. This effect is the largest for the sorbents based on polyallylamine. The conditions of quantitative desorption of the studied metals from sorbent surface have been determined. The sorption of gold(III) by the sorbent based on polyallylamine has been shown to be complicated by gold(III) reduction in sorbent phase.
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7.

Вид документа : Статья из журнала
Шифр издания : Г/C 55
Автор(ы) : Alifkhanova L. M., Petrova Y. S., Bosenko S. N., Neudachina L.K., Pestov A. V.
Заглавие : Choice of optimal conditions for the dynamic concentration of silver(I) ions from complex solutions with sulfoethylated polyaminostyrenes
Место публикации : Russian Journal of Inorganic Chemistry. - 2021. - Т. 66, № 4. - С. 578-585
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: This work was intended to study the selectivity of silver(I) ion adsorption with sulfoethylated polyaminostyrenes under dynamic conditions. The greatest selectivity of the extraction of silver(I) ions in the presence of copper(II) ions is at pH 6.0 and a solution flow rate of 2 mL/min. The breakthrough curves of metal adsorption were obtained in the joint presence of sorbates from ammonium acetate buffer solution. The dynamic capacities of adsorbents, rate constants of reactions, and 50% sorbate breakthrough times were determined. The silver(I) adsorption selectivity increases with an increase in degree of substitution of polyaminostyrenes. The breakthrough curves were fitted with the Thomas, Adams–Bohardt, and Yoon–Nelson models. For the quantitative desorption of silver(I) ions from the adsorbents, 20.0 mL of 1 M nitric acid is most appropriate.
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8.

Вид документа : Статья из журнала
Шифр издания : Г/S 98
Автор(ы) : Ostrovskii V.A., Danagulyan G. G., Nesterova O. M., Pavlyukova Y. N., Tolstyakov V. V., Zarubina O. S., Slepukhin P. A., Esaulkova Y. L., Muryleva A. A., Zarubaev V. V., Trifonov R. E.
Заглавие : Synthesis and antiviral activity of nonannulated tetrazolylpyrimidines
Место публикации : Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 4. - С. 448–454
УДК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrimidines--tetrazoles--biological activity--linkers
Аннотация: Nonannulated tetrazolylpyrimidines in the structure of which the heterocyclic fragments are separated by hydrazinocarbonylmethyl, methylpyrazolyl groups or a sulfur atom were synthesized. Some of these compounds showed moderate in vitro activity against H1N1 subtype of influenza A virus. The selectivity index of the anti-influenza action of {5-[(4,6-dimethylpyrimidin-2-yl)sulfanyl]-1H-tetrazol1-yl}acetic acid, which has very low cytotoxicity, was twice as high as the selectivity index of the reference drug rimantadine.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kapitanova E. I., Sinelshchikova A. R., Petrova Yu. S., Zemlyakova E. O., Pestov A. V., Neudachina L.K.
Заглавие : Effect of the degree of sulfoethylation of polyethylenimine on the selectivity of sorption of palladium(II) from binary solutions
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1161-1166
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): polyethylenimine--sulfoethylation--sorption--platinum(iv)--palladium(ii)--gold(iii)
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10.

Вид документа : Статья из журнала
Шифр издания : Г/K 46
Автор(ы) : Chulakov E. N., Korolyova M. A., Sadretdinova L. S., Tumashov A. A., Kodess M. I., Levit G. L., Krasnov V. P.
Заглавие : Kinetic resolution of racemic 6-substituted 1,2,3,4-tetrahydroquinaldines with chiral acyl chlorides. Experiment and quantum chemical simulation
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 5. - С. 890-899
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A comparative study of the kinetic resolution (KR) of racemic 6-substituted 2-methyl-1,2,3,4-tetrahydroquinolines with acyl chlorides of (S)-naproxen, N-phthaloyl-(S)-leucine, and (R)-O-phenyllactic acid was carried out. The selectivity factors in the KR of racemic amines with acyl chlorides of (S)-naproxen and (R)-O-phenyllactic acid were shown to be approximately the same and higher than those for the KR of N-phthaloyl-(S)-leucyl chloride. The reasons for the stereodifferentiation in the KR of racemic tetrahydroquinaldines containing groups of different electronic properties by acyl chlorides of three different chiral acids were explained using the DFT method. The conditions for stabilizing π—π interactions of aromatic fragments of the reagents, which do not occur in the same form in the transition state and lead to the minor diastereoisomeric product, are created in the transition state of the faster acylation reaction with (S)-naproxen and (R)-O-phenyllactic acyl chlorides. In the case of the KR of 2-methyl-1,2,3,4-tetrahydroquinoline and 2-methyl-6-methoxy-1,2,3,4-tetrahydroquinoline with N-phthaloyl-(S)-leucyl chloride, the acylation diastereoselectivity is determined, most likely, by conformational factors. The individual (S)-enantiomer of 2-methyl-6-methoxy-1,2,3,4-tetrahydroquinoline of high optical purity was synthesized using the KR of the racemate with (S)-naproxen acyl chloride.
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11.

Вид документа : Статья из журнала
Шифр издания : Г/I-60
Автор(ы) : Kholmogorova A. S., Fedoseeva E. A., Neudachina L. K., Osipova V. A., Pestov A. V.
Заглавие : Influence of the structure of the aminoalkyl group in polysiloxane on the selectivity of its interaction with metal ions
Место публикации : Russian Journal of Applied Chemistry. - 2021. - Vol. 94, № 4. - С. 478-485
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Polysiloxanes containing nonchelating 3-aminopropyl and chelating N-(2-aminoethyl)-3-aminopropyl groups with the degree of functionalization of 28 and 24%, respectively, were prepared by sol–gel synthesis. The polysiloxanes obtained showed comparable activity in sorption of Pd(II), Pt(IV), Fe(III), Cd(II), Zn(II), Co(II), Ni(II), Cu(II), Mn(II), Pb(II), Ca(II), and Mg(II) ions from model multicomponent solutions. At pH 3,3-aminopropylpolysiloxane selectively takes up platinoid ions. The chelating structure of N-(2-aminoethyl)-3-aminopropyl groups leads to a decrease in the selectivity of the interaction with Pd(II) ions but increases the affinity for Fe(III), Ni(II), and Cu(II). Preconcentration in the dynamic mode allows quantitative sorption of Pd(II) and Pt(IV), followed by virtually quantitative elution of the metal ions from the sorbent surface.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Verbitskiy E. V., Rusinov G. L., Chupakhin O. N., Charushin V. N.
Заглавие : Design of fluorescent sensors based on azaheterocyclic push-pull systems towards nitroaromatic explosives and related compounds: a review
Место публикации : Dyes and pigments. - 2020. - Vol. 180. - С. 108414
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): nitroaromatic explosives--fluorescence quenching--pyridines--pyrazine--pyrimidines--triazines
Аннотация: Highly sensitive and selective detection of nitro containing high energy organic compounds such as picric acid (PA), 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT) has become a challenging task due to concerns over national security, criminal investigations and environment protections. Among various known detection methods, fluorescence sensors have gained special attention in recent time. The family of fluorescent sensors based on push-pull systems that incorporate nitrogen heterocycles as an electron-withdrawing group have a growing interest due to their high sensitivity, selectivity and easy tuning. The fluorescent sensors discussed in this review are classified and organized according to used azaheterocyclic scaffold, their functionality and their ability to detect of nitroaromatics by fluorescence quenching.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrova Y. S., Neudachina L. K., Oseeva M. Y., Pestov A. V.
Заглавие : Effect of complex-former ion concentration on the selectivity of metal ion sorption on cross-linked N-2-sulfoethylchitosan
Место публикации : Russian journal of inorganic chemistry. - 2018. - Т. 63, № 3. - С. 400-405
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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14.

Вид документа : Статья из журнала
Шифр издания : 54/T 44
Автор(ы) : Baranova A. A., Khokhlov K. O., Chuvashov R. D., Verbitskiy E. V., Cheprakova E. M., Rusinov G. L., Charushin V. N.
Заглавие : The portable detector of nitro-explosives in vapor phase with new sensing elements on a base of pyrimidine scaffold
Место публикации : Journal of Physics: Conference Series. - 2017. - Vol. 830. - С. 012159[1-6]
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): portable detector--nitroexplosive--vapor phase--sensing element--pyrimidine scaffold--c(5) mono(heteroaryl)--c(4) mono(heteroaryl)--di(heteroaryl) substituted --pyrimidines--pyrimidine ring--volatile interferent-- nitroscan--temperature 293 k to 298 k
Аннотация: In this paper, the new sensors based on the C(4) or/and C(5) mono(heteroaryl) and di(heteroaryl) substituted pyrimidines are described. The effect of different substituents in pyrimidine ring on the detection limits and selectivity for prepared sensors are explained. The results of detection towards various nitro-explosives and volatile interferents at room temperature with use of the portable detector “Nitroscan” are shown.
\\\\Expert2\\NBO\\Journal of Physics Conference series\\2017 v.830 p.012159.pdf
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15.

Вид документа : Статья из журнала
Шифр издания : 54/N 52
Автор(ы) : Kharitonova M. I., Denisova A. O., Kayushin A. L., Konstantinova I. D., Miroshnikov A. I., Kotovskaya S. K., Charushin V. N., Andronova V. L., Galegov G. A.
Заглавие : New modified 2-aminobenzimidazole nucleosides: Synthesis and evaluation of their activity against herpes simplex virus type 1
Место публикации : Bioorganic and Medicinal Chemistry Letters. - 2017. - Vol. 27, № 11. - С. 2484-2487
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): antiviral activity--benzimidazoles--fluorinated compounds--nucleoside phosphorylases--nucleosides--transglycosylation reaction
Аннотация: Using the enzymatic transglycosylation reaction β-d-ribo- and 2′-deoxyribofuranosides of 2-amino-5,6-difluorobenzimidazole nucleosides have been synthesized. 2-Amino-5,6-difluoro-benzimidazole riboside proved to exhibit a selective antiviral activity (selectivity index 32) against a wild strain of the herpes simplex virus type 1, as well as towards virus strains that are resistant to acyclovir, cidofovir, and foscarnet. We believe that this compound might be used for treatment of herpes infections in those cases, when acyclovir is not efficient.
\\\\Expert2\\NBO\\Bioorganic and Medicinal Chemistry Letters\\2017 v.27 p.2484-2487.pdf
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16.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Gavlik K. D, Lesogorova S. G., Sukhorukova E. S., Subbotina J.O., Slepukhin P. A., Benassi E., Belskaia N. P.
Заглавие : Synthesis of 2-Aryl-1,2,3-triazoles by Oxidative Cyclization of 2-(Arylazo)ethene-1,1-diamines: A One-Pot Approach
Место публикации : European Journal of Organic Chemistry. - 2016. - № 15. - С. 2700-2710
ББК : 54
Предметные рубрики: ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ
Ключевые слова (''Своб.индексиров.''): synthetic methods--nucleophilic addition--oxidative dequaternization
Аннотация: A one-pot approach for the synthesis of 2-aryl-5-amino-1,2,3-triazoles is reported. This approach involves a tandem nucleophilic addition of alkylamines to hydrazonoyl cyanides and in situ oxidative cyclization of the resulting 2-(aryl-azo)ethene-1,1-diamines in the presence of copper(II) acetate and air. The described one-pot procedure is characterized by good yields, excellent selectivity, methodical simplicity, and uses readily available chemicals. This method was applied to the gram-scale synthesis of 2-aryl-1,2,3-triazoles.
\\\\expert2\\NBO\\European Journal of Organic Chemistry\\2016, v. 15, p. 2700.pdf
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17.

Вид документа : Статья из журнала
Шифр издания : 54/S 61
Автор(ы) : Petrova Yu. S., Neudachina L.K., Mechaev A., Pestov A. V.
Заглавие : Simple synthesis and chelation capacity of N-(2-sulfoethyl)chitosan, a taurine derivative [Электронный ресурс]
Место публикации : Carbohydrate Polymers. - 2014. - Vol.112. - С. 462-468
Систем. требования: http://libgen.org/scimag/get.php?doi=10.1016%2Fj.carbpol.2014.06.028
Примечания : Bibliogr. : p. 467-468 (60 ref.). - 13.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chitosan--selectivity--sorption
Аннотация: This study presents a simple and effective synthesis method of N-(2-sulfoethyl)chitosan (NSE-chitosan) via a reaction between sodium 2-bromoethanesulfonate and chitosan that allows polymer transformation without using additional reagents and organic solvents. The chemical structure of the obtained NSE-chitosan was characterized by FT-IR and 1H NMR spectroscopies. Thermogravimetric study of NSE-chitosan coupled with FT-IR analysis has shown stability of the polymer up to 200 °C, which almost does not change with the increase of degree of substitution (DS). The sorption of transition and alkaline earth metal ions from multicomponent solutions on NSE-chitosan was investigated. The synthesized sorbents showed the selective recovery of silver(I) and copper(II) ions from ammonium acetate buffer solution. The increase of DS enhanced the selectivity to silver(I) ions sorption in comparison with copper(II) ions. Selectivity coefficients KAg/Cu increase from 1.3 to 10.9 with DS increasing up to 0.7 (ammonium acetate buffer solution, pH 6.5). Sorption isotherms of transition metal ions on NSE-chitosan with DS = 0.5 have been fitted using Langmuir, Freundlich, and Redlich-Peterson models. The maximum sorption capacities of sorbent in ammonium acetate buffer solution at pH 6.0 were 1.72 mmol/g for Cu(II), 1.23 mmol/g for Ag(I) and below 0.5 mmol/g for Co(II), Zn(II), Cd(II), Pb(II), Mn(II) and Ni(II) ions
\\\\expert2\\nbo\\Carbohydrate Polymers\\2014, v. 112, p. 462.pdf
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18.

Вид документа : Статья из журнала
Шифр издания : 54/O-97
Автор(ы) : Frolova L. L., Popov A. V., Bezuglaya L. V., Slepukhin P. A., Kuchin A. V.
Заглавие : Oxidation of terpenoid diols with chlorine dioxide. Easy preparation of α-hydroxyketones [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2014. - Vol.84, №5. - С. 853-859
Систем. требования: http://download.springer.com/static/pdf/247/art%253A10.1134%252FS1070363214050120.pdf?auth66=1408162021_62143127c58f3ed789851c5d51b6dc1a&ext=.pdf
Примечания : Bibliogr. : p. 859 (16 ref.). - 14.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chlorine dioxide --oxidation--selectivity
Аннотация: Oxidative dehydrogenation of vicinal diols of bornane and pinane type with chlorine dioxide in dimethylformamide has yielded α-hydroxyketones with high selectivity. 3α-Hydroxy-10β-pinane-4-one has been prepared for the first time with yield of 63-65%; the product structure has been confirmed by X-ray diffraction studies
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2014, V. 84, N 5, p. 853–859.pdf
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19.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Bratskaya S.YU., Azarova Yu. A., Portnyagin A. S., Mechaev A., Voit A., Pestov A. V.
Заглавие : Synthesis and properties of isomeric pyridyl-containing chitosan derivatives
Место публикации : International Journal of Biological Macromolecules . - 2013. - С. 426-432
Примечания : Bibliogr. : p. 431-432 (49 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chitosan--physical-chemical properties--pyridyl derivative
Аннотация: Here we report on the method of synthesis in gel of a new heterocyclic aminopolymer-N-2-(4-pyridyl)ethylchitosan (4-PEC) via direct addition of 4-vinylpyridine to chitosan that yields a derivative with the substitution degree (DS) up to 0.8. The comparison of reactivity, thermal, spectroscopic, and sorption properties of a new derivative and its isomer N-2-(2-pyridyl)ethylchitosan (2-PEC) is presented. 2-PEC has higher sorption capacity and forms more stable chelates with [PdCl4]2- and [PtCl6]2- ions than 4-PEC, but the latter shows higher selectivity to noble metals ions in the presence of Cl- ions. A gradual increase of the sorption capacities and the affinity coefficient for Cu2+ and Ni2+ in the row chitosan4-PEC2-PEC was related to the increase of electron donor nitrogen atoms content and chelating properties of 2-PEC. A nearly negligible increase of the 4-PEC sorption capacity for Ag+, as compared to plain chitosan, was suggested to be dependent on the difference in complexation models for 2-PEC and 4-PEC derivatives. The density functional theory (DFT) calculations have shown that the "pendant" model of the complex with Ag(I) is energetically favorable only for 2-PEC derivative, while in cases of chitosan and 4-PEC only "bridge" complexes can be formed that results in lower sorption capacity
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20.

Вид документа :
Шифр издания : 54/S 98
Автор(ы) : Pestov A. V., Slepukhin P. A., Yatluk Yu. G., Charushin V. N., Chupakhin O. N.
Заглавие : Synthesis of chelating polymer sorbents by using the S-N(H) methodology
Место публикации : Journal of Applied Polymer Science . - 2012. - Vol.125, №3. - С. 1970-1978
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): functionalization of polymers--phenol--x-ray analysis
Аннотация: The article describes a new synthetic approach to modify the structure of phenol-formaldehyde and resorcinol-formaldehyde resins, which enables one to functionalize a polymer matrix by using the S?NH (nucleophilic aromatic substitution of hydrogen) methodology. Direct heteroarylation of phenol (resorcinol) fragments in polymer chains with 1,2,4-triazine derivatives illustrates a new synthetic method in the polymer chemistry. The feature of this methodology is that it provides an opportunity to accomplish direct one-pot polymer transformations by incorporating of rather complicated chelating groups through the displacement of hydrogen in phenol moieties. It has been shown that in order to obtain chemically modified polymers on the basis of phenol-formaldehyde and resorcinol-formaldehyde resins with a high degree of substitution with chelating units, a polymer matrix has to react with 3-(pyridin-2'-yl)-1,2,4-triazin-5(2H)-one. Also, it has been found that polymer sorbents with a high selectivity can be obtained by using the template method. Targeted synthesis of model compounds, as structural units of the chelating polymers, and elucidation of the structure of their complexes with copper (II) ions have shown that the most plausible type of coordination is formation of the bridge 1 : 1 complexes of the a,a'-bipyridinyl type.
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