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Труды сотрудников Института органического синтеза УрО РАН - результаты поиска

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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»
Библиометрия
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1.

Вид документа : Статья из журнала
Шифр издания : 54/A 10
Автор(ы) : Sarkar A., Santra S., Kundu S. K. , Zyryanov G. V., Chupakhin O. N., Charushin V. N., Majee A.
Заглавие : A decade update on solvent and catalyst-free neat organic reactions: a step forward towards sustainability [Электронный ресурс]
Место публикации : Green Chemistry. - 2016. - Vol. 18, № 16. - С. 4475-4525
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 26.10.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): one-pot synthesis --diels-alder reactions--electron-deficient olefins
Аннотация: Particular success has been achieved in the synthesis of new products and in processes since the twelve principles of "green chemistry" were formulated in the 1990s. These products and processes are more compatible with human health, society, and the environment. In this review, a collection of research reports have been documented from the viewpoint of green chemistry. The main theme of this review is neat reactions, which are solvent and catalyst-free reactions. Neat reactions in the absence of any solvent or catalyst with concise summaries of microwave, ball milling, and neat reactions have been described.
\\\\expert2\\NBO\\Green Chemistry\\2016, v.18, N 16, p.4475.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 54/A 10
Автор(ы) : Saloutina L. V., Zapevalov A. Ya., Saloutin V. I., Slepukhin P. A., Kodess M. I., Kirichenko V. E., Pervova M. G., Chupakhin O. N.
Заглавие : A route to fluorocontaining N,S-heterocycles via octafluoro-2,3-epoxybutane
Место публикации : Journal of Fluorine Chemistry. - 2007. - Vol. 128, № 7. - С. 769-778
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reaction of octafluoro-2,3-epoxybutane 1 with 2-aminothiophenol gave three kinds of novel fluorocontaining N,S-heterocyclic compounds depending on the solvent nature: 2,3-bis(trifluoromethyl)-3,4-dihydro-2H-1,4-benzothiazin-2-ol 2, 2-trifluoromethyl-2-[1-(2-aminophenylthio)-2,2,2-trifluoroethyl]-1,3-benzothiazolidine 6 and 5a,11a-bis(trifluoromethyl)-5a,6,11a,12-tetrahydro-5,11-dithia-6,12-diazanaphthacene 5. Use of the toluene, dioxane, tetrahydrofuran, acetonitrile and dimethoxyethane gave the unexpected dihydrobenzothiazine 2 (RS,SR RR,SS) in good to moderate yields. In dimethylsulfoxide and N,N-dimethylacetamide, unusual cyclization occurred resulting in benzothiazolidine 6 (RS,SR/RR,SS 1:1) in moderate yields. Formation of minor 1,1,1,3,4,4,4-heptafluoro-3-(2-aminophenylthio)-2,2-dihydroxybutane 4 which was converted into bis(benzothiazine) 5 was observed in all solvents tested with the exception of toluene and dioxane. The molecular structure of the RS,SR-diastereomer of dihydrobenzothiazine 2, bis(benzothiazine) 5 and the RS,SR-diastereomer of benzothiazolidine 6 has been established by X-ray crystallography.
\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2007, v.128. p.769.pdf
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Taniya O. S., Fedotov V. V., Sadieva L. K., Krinochkin A. P., Kovalev I. S., Kopchuk D. S., Zyryanov G. V., Ulomsky E. N., Rusinov V. L., Charushin V. N., Novikov A. S., Liu Y.
Заглавие : Abnormal push-pull benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores in planarized intramolecular charge transfer (PLICT) state: Synthesis, photophysical studies and theoretical calculations
Место публикации : Dyes and Pigments. - 2022. - Vol. 204. - Ст.110405
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The combination of excellent luminescence with high solvent polarity effect and aggregation induced emission (AIE) is an ideal combination for creating fluorophores/probes with high microenvironmental sensitivity. However, many push-pull chromophores of the D−A type in common intramolecular charge transfer (ICT) state with a significant solvatochromic effect and AIE activity, have poor luminescent properties. Herein, to overcome this problem by using reactions of nucleophilic aromatic hydrogen substitution (SNH), we have designed a series of novel 4-heteroaryl-substituted 2-aryl-2H-benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores possessing a planarized intramolecular charge transfer (PLICT) state. All these fluorophores exhibited high luminescence quantum yields (up to 60%) and large Stokes shift values of up to 7459 cm−1. Among them, the fluorophore 4h was found to exhibit the most pronounced positive solvatochromic effect and the probe 4f exhibited the most pronounced aggregation induced emission characteristics. This AIE behavior was further confirmed by means of time-resolved fluorescence lifetime measurements as well as DFT-assisted geometry optimization studies. In the presence of trifluoroacetic acid (TFA) compound 4h exhibited a well-pronounced acidochromism via visible color change from yellow-green to orange which returned to the original yellow-green solution after the addition of triethylamine (TEA). The Stern-Volmer constant for the probe 4h towards TFA was 38 M−1. Finally, for the compounds 4f, g, h theoretical calculations in the ground and excited states in different solvents were carried out to confirm the PLICT process. Based on all above the herein reported PLICT fluorophores 4a-h can be successfully applied as biological probes and optical switches.
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4.

Вид документа : Статья из журнала
Шифр издания : 54/A 19
Автор(ы) : Gruzdev D.A., Levit G. L., Krasnov V. P., Chulakov E.N., Sadretdinova L. Sh., Grishakov A. N., Ezhikova M. A., Kodess M. I., Charushin V. N.
Заглавие : Acylative kinetic resolution of racemic amines using N-phthaloyl-(S)-amino acyl chlorides
Место публикации : Tetrahedron: Asymmetry . - 2010. - Vol. 21, № 8. - С. 936-942
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A comparative study of the kinetic resolution of racemic 2-methyl-1,2,3,4-tetrahydroquinoline and 2,3-dihydro-3-methyl-4H-1,4-benzoxazine using N-phthaloyl-(S)-amino acyl chlorides as chiral acylating agents is described. Temperature and solvent effects on the stereochemical features have been examined. It has been found that N-phthaloyl-(S)-phenylalanyl and N-phthaloyl-(S)-2-phenylglycyl chlorides bearing aromatic substituents close to the stereogenic centre are more stereoselective acylating agents than N-phthaloyl-(S)-alanyl chloride. For the preparative kinetic resolution of racemic amines N-phthaloyl-(S)-phenylalanyl chloride proved to be the most appropriate chiral acylating agent
\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2010, v. 21, p.936.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : Г/A 53
Автор(ы) : Chatterjee R., Majee A., Mukherjee A., Santra S., Zyryanov G. V., Chupakhin O. N.
Заглавие : An expedient solvent-free c-benzylation of 4-hydroxycoumarin with styrenes
Место публикации : Mendeleev Communications. - 2021. - Vol. 31, № 1. - С. 123-124
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: An efficient straightforward solvent-free C(3)-benzylation of 4-hydroxycoumarin with styrenes is performed by heating the reactants in the presence of p-toluenesulfonic acid. By this procedure, benzylated 4-hydroxycoumarin derivatives which exhibit various biological activities were obtained.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rammohan A., Krinochkin A. P., Kopchuk D. S., Shtaitz Y. K., Kovalev I. S., Savchuk M. I., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Conditions for the Synthesis of 4,5-Diaryl-3-hydroxy-2,2'-bipyridine-6-carbonitriles by the Reaction of 1,2,4-Triazine-5-carbonitriles with 2-Aminooxazoles
Место публикации : Russian Journal of Organic Chemistry. - 2022. - Vol. 58, № 2. - С. 175-179
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Various conditions for the inverse electron-demand aza-Diels–Alder reaction in the series of 5-aryl-3-(2-pyridyl)-1,2,4-triazine-5-carbonitriles and 2-amino-4-aryloxazoles to obtain 4,5-diaryl-3-hydroxy-2,2'-bipyridine-6-carbonitriles were tested. Heating in 1,2-dichlorobenzene or under solvent-free conditions were found to be the most effective.
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7.

Вид документа : Статья из журнала
Шифр издания : 54/C 78
Автор(ы) : Kuznetsova O. A., Khmara E. F., Filyakova V. I., Uimin M. A., Ermakov A. E., Rhee C. K., Charushin V. N.
Заглавие : Copper and Copper Oxides Nanopowders in the Oxidative Condensations of Phenylacetylene and Tert-Butylacetylene [Electronic resource]
Место публикации : Russian Journal of General Chemistry. - 2007. - Vol. 77, № 3. - С. 404-408
Систем. требования: http://www.springerlink.com/content/q63v45313150n82x/fulltext.pdf
Примечания : Библиогр. : с. 408 (12 назв.). - 17.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Transformations of phenylacetylene and tert-butylacetylene in the presence of copper and copper oxide (Cusub2/subO, CuO) nanopowders prepared by gas-phase condensation of copper in argon were studied. The reaction of phenylacetylene with copper oxide nanopowders having different phase compositions in the absence of a solvent at room temperature resulted in oxidative condensation of phenylacetylene and complex formation of the condensation product. The complex undergoes decomposition by the action of acids, bases, and compounds capable of forming complexes. According to the X-ray diffraction data, one of the products is a new “parquet” modification of diphenyldiacetylene. Under analogous conditions, tert-butylacetylene gave rise to a complex mixture of products among which di- tert-butyldiacetylene was identified by gas chromatography-mass spectrometry. No copper complexes with the tert-butylacetylene condensation products were detected.
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2007, V. 77, N 3, p.404.pdf
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8.

Вид документа : Статья из журнала
Шифр издания : 54/C 98
Автор(ы) : Shchepin V. V., Silaichev P. S., Shchepin R.V., Ezhikova M. A., Kodess M. I.
Заглавие : Cyclopropanation of N-Substituted 2-Oxochromene- and 6-Bromo-2-oxochromene-3-carboxamides with Zinc Enolates Derived from 1-Aryl-2,2-dibromoalkanones [Electronic resource]
Место публикации : Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2005. - Vol. 41, № 4. - С. 527-534
Систем. требования: http://www.springerlink.com/content/t64r8082010l8686/fulltext.pdf
Примечания : 31.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Zinc enolates derived from 1-aryl-2,2-dibromoalkanones react with N-cyclohexyl-2-oxochromene-3-carboxamides to give N-cyclohexyl-1-alkyl-1-aroyl-2-oxo-1a,7b-dihydrocyclopropa[c]chromene-1a-carboxamides mainly as cis isomers with respect to the substituents in positions 1 and 1a. Reactions of the same zinc enolates with N-benzyl-2-oxochromene-3-carboxamide and N-benzyl-6-bromo-2-oxochromene-3-carboxamide lead to formation of 1-aryl-2-benzyl- and 1-aryl-2-benzyl-6-bromo-1-hydroxy-9c-alkyl-1,2,9b,9c-tetrahydro-5-oxa-2-azacyclopenta[2,3]cyclopropa[1,2-a]naphthalene-3,4-diones. The reaction of zinc enolates with N-aryl-2-oxochromene-3-carboxamides in a weakly polar solvent (diethyl ether or ethyl acetate) affords mixtures of cis-N-aryl-1-aroyl-1-alkyl-2-oxo-1a,7b-dihydrocyclopropa[c]chromene-1a-carboxamides and their cyclic isomers, 9c-alkyl-1,2-diaryl-1-hydroxy-1,2,9b,9c-tetrahydro-5-oxa-2-azacyclopenta[2,3]cyclopropa[1,2-a]naphthalene-3,4-diones, the latter prevailing. N-Substituted 1-alkyl-1-aroyl-2-oxo-1a,7b-dihydrocyclopropa[c]chromene-1a-carboxamides in which the aroyl group on C1 and the carboxamide group on C1a are arranged trans are formed by reactions of zinc enolates with the corresponding 2-oxochromene-3-carboxamides in the presence of hexamethylphosphoric triamide
\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2005, 41 (4), 527.pdf
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9.

Вид документа : Статья из журнала
Шифр издания : 54/D 46
Автор(ы) : Beryozkina T., Bakulev V. A., Dianova L., Slepukhin P. A.
Заглавие : Design and Synthesis of N-Sulfonylamidines of Modafinic Acid [Электронный ресурс]
Место публикации : Synthesis-Stuttgart. - 2016. - Vol. 48, № 7. - С. 1046-1054
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 03.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): modafinil --n-sulfonyl amidines--dat inhibitors
Аннотация: A design and a convenient approach for the synthesis of novel N-sulfonyl-2-diphenylmethylsulfinylacetamidines have been demonstrated by starting from benzhydrylsulfanylacetic (BSA) acid. This approach involves a sequential amidation with amines, thionation with Lawesson's reagent, iminosulfonylation with sulfonyl azides, and oxidation of sulfide fragment with hydrogen peroxide. The key step of this transformation (reaction of thioamides with sulfonyl azides) was carried out either in ethanol or in the absence of any solvent. The synthesized compounds were tested in cells for inhibition of dopamine transporter. Among the synthesized compounds, two products were found to be in a similar range of activity as the well-known dopamine transporter inhibitor, modafinil.
\\\\expert2\\NBO\\Synthesis-Stuttgart\\2016. 48(7). 1046-1054.pdf
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Reddivari C. K. R., Devineni S. R., Yellalavenkata R. R., Chamarthi N. R., Shaik N., Nemallapudi B. R., Sravya G., Zyryanov G. V., Avula B., Badavath V. N.
Заглавие : Design, synthesis, biological evaluation and molecular docking studies of 1,4-disubstituted 1,2,3-triazoles: peg-400:h2o mediated click reaction of fluorescent organic probes under ultrasonic irradiation
Место публикации : Polycyclic aromatic compounds. - 2021. - Vol. 42, № 7. - С. 3953-3974
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): ultrasonication--123-triazole--antioxidant activity
Аннотация: The perpetual demand of medicinally significant scaffolds has prompted the synthetic chemists to identify simple and efficient routes for flawless synthesis. A PEG-400:H2O mediated highly versatile, efficacious and selective “Click reaction” of fluorescent organic Probes under ultrasonic irradiation is reported. 1,2,3-Triazole ring has also been revealed to play a crucial role in bioorthogonal methodologies, fragment-based drug design, and biomolecular mimetics. This methodology provides a rapid and efficient approach for the synthesis of 1,4-Disubstituted 1,2,3-triazoles under Copper (I)-Catalyzed Azide-Alkyne [3 + 2] Cycloaddition (CuAAC) conditions in good to excellent yields in less time. This synthetic protocol has been proven to endorse easy work-up under benign reaction conditions. The green solvent system employed has been efficaciously reused several times without any loss of its activity in an aqueous medium. All the title compounds were characterized by using elemental analysis, 1HNMR, 13CNMR, FTIR, and mass spectral data. The newly synthesized compounds were biologically evaluated for their antioxidant activity. The antioxidant activity results demonstrate that all compounds showed good to excellent antioxidant activity, particularly the compounds 5d, 8 b, 8c and 8d exhibited promising radical scavenging activity. Further, photophysical properties of the compounds were accomplished using spectrofluorimeter. By this method, compounds 5c, 5e, 5f, 8a, 8 b, 8c and 8d exhibited fluorescence in the visible region. Molecular docking studies suggested the antioxidant activity of synthesized compounds due to the inhibition of neuronal nitric oxide synthase (HnNOS).
https://doi.org/10.1080/10406638.2021.1878246
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rodionova A. P., Mekhaev A. V., Koryakova O. V., Zhilina E. F., Pestov A. V.
Заглавие : Development of a method for the thiocarbamoylation of polyepichlorohydrin with a high degree of functionalization
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1167-1173
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): polyepichlorohydrin--thiourea--synthesis in gel
Аннотация: The conditions for the homogeneous functionalization of polyepichlorohydrin (PECH) with thiourea by the “synthesis in gel” method were experimentally selected. The best solvent for this process is 1,4-dioxane. The reaction mixture visually represents a physical gel in the range of polymer concentrations from 6 to 20%. The composition of the products was characterized by the data of elemental analysis, and specific features of their structure were established using FT-IR spectroscopy and thermogravimetry with the simultaneous IR spectrometric identification of the decomposition products. Thiourea was shown to react with PECH as an ambident nucleophile with the formation of both groups of N-substituted thiourea and fragments of isothiuronium salt. The total degree of functionalization was 90%. The crosslinking of the macromolecules proceeds simultaneously due to which the obtained products with different degrees of functionalization are insoluble in organic solvents. The thiocarbamoylated PECH derivative demonstrates antiselectivity to CuII ions in the sorption of the metal ions of the Irving—Williams series.
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12.

Вид документа : Статья из журнала
Шифр издания : Г/E 27
Автор(ы) : Abu el-Soad A. M., Pestov A. V., Martemyanov N. A., Kovaleva E. G., Lazzara G., Cavallaro G.
Заглавие : Effect of polarity of solvent on silanization of halloysite nanoclay using (3-glycidyloxy propyl) trimethoxy silane
Место публикации : Journal of inorganic and organometallic polymers and materials. - 2021. - № 31. - С. 2569–2578
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The grafting of silane groups on clay surfaces has been recently investigated in order to fabricate versatile compounds with new potential applications in materials science and ecological engineering. This work explored the influence of variety of solvents with variable polarity on the silanization of halloysite nanoclay (HNT) surface by (3-Glycidyloxy propyl) trimethoxy silane. To this purpose, the functionalization of HNT by 3-Glycidyloxypropyltrimethoxysilane (GOPTMS) has been conducted in Ethanol (polar protic solvent), Tetrahydrofuran (THF) and Acetonitrile (polar aprotic solvents), and Hexane, 1,4-Dioxane and Toluene (non polar solvents). The silane grafted materials were characterized by using several techniques, including Fourier Transform Infrared Spectroscopy (FT-IR), elemental analysis, Scanning Electron Microscopy (SEM), Thermogravimetry (TGA), X-ray Diffraction Analysis (XRD) and Nitrogen adsorption/desorption isotherms. The largest silane loading has been detected for the hybrid nanomaterials prepared in Hexane as a dispersing medium.
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13.

Вид документа : Статья из журнала
Шифр издания : Г/E 27
Автор(ы) : Krinochkin A. P., Guda M. R., Kopchuk D. S., Slovesnova N. V., Kovalev I. S., Savchuk M. I., Shtaitz Y. K., Starnovskaya E. S., Zyryanov G. V., Chupakhin O. N.
Заглавие : Efficient synthesis of 5-[3(4)-(5-phenyl-1,3,4-oxаdiаzol-2-yl)­anilino]-1,2,4-triаzines
Место публикации : Russian Journal of Organic Chemistry. - 2021. - Vol. 57, № 10. - С. 1753-1756
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1,2,4-Triazine derivatives containing a 3- or 4-(5-phenyl-1,3,4-oxadiazol-2-yl)anilino group on C5 were synthesized by nucleophilic substitution of the cyano group in 3,6-diaryl-1,2,4-triazine-5-carbonitriles under solvent-free conditions.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Edilova Y. O., Burgart Y. V., Saloutin V. I., Bazhin D. N., Kudyakova Y. S., Kiskin M. A.
Заглавие : Expanding 1,2,4-triketone toolbox for use as fluorinated building blocks in the synthesis of pyrazoles, pyridazinones and β-diketohydrazones
Место публикации : Journal of fluorine chemistry. - 2022. - Vol. 253. - Ст.109932
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluorinated lithium β-diketonates bearing a methyl acetal group behave in the condensation reactions with hydrazines as trielectrophilic building blocks for the preparation of pyrazoles, pyridazinones and β-diketohydrazones. For the first time, solvent-induced regioisomeric and heterocyclic ring size-controlled formation was observed for 1,2,4-triketone analogues. Fluoroalkylated acetyl NH-pyrazoles or substituted 5-RF-pyrazoles were obtained from the acid-catalyzed cyclocondensation of lithium β-diketonates with (aryl)hydrazines in ethanol. In methanol solvent acetyl-containing 3-CF3-pyrazoles were isolated because of inverse nucleophilic attack of arylhydrazines. The use of aprotic acetonitrile in the condensation resulted in regioselective trifluorinated pyridazinones and fluorinated β-diketohydrazones formation via initial acetal fragment interaction with N,N-dinucleophile.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Osipova V. A., Pestov A. V., Mekhaev A. V., Abu el-Soad A. M., Tambasova D. P., Kovaleva E. G.
Заглавие : Functionalization of halloysite with N-(2-aminoethyl)-3-aminopropyl-trimethoxysilane
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1180-1184
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): halloysite--n-(2-aminoethyl)-3-aminopropyltrimethoxysilane--sorption of cu(ii)
Аннотация: In order to increase the affinity of the halloysite mineral to 3d-metal ions, its surface was functionalized with N-(2-aminoethyl)-3-aminopropyltrimethoxysilane. A significant influence of the nature of the solvent and silane concentration on the degree of functionalization of halloysite was revealed. According to the data of elemental analysis, FTIR spectroscopy, and thermogravimetry, it was found that the most efficient solvents were tetrahydrofuran and acetonitrile at an equimolar silane to halloysite ratio. The functionalization of halloysite with N-(2-aminoethyl)-3-aminopropylsilyl groups significantly increases the sorption capacity of the material in comparison with both unmodified halloysite and halloysite functionalized with non-chelating 3-aminopropylsilyl groups.
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16.

Вид документа : Статья из журнала
Шифр издания : 54/I-60
Автор(ы) : Bushkova O. V., Koryakova I.P., Skorik Yu.A., Lirova B.I. , Pestov A. V., Zhukovskii V.M.
Заглавие : Influence of metal coordination on conductivity behavior in poly(butadiene-acrylonitrile)-CoCl2 system
Место публикации : Electrochimica Acta. - 2008. - Vol. 53, № 16. - С. 5322-5333
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The metal complex formation and the electrical properties of amorphous solid polymer electrolytes, based on poly(butadiene-acrylonitrile) copolymer (PBAN) and CoCl2, have been studied over the homogeneity region of the system limited by the CoCl2 concentration of 1.89 mol kg-1. It has been found that ionic conductivity is carried out by the unipolar anion transfer at lower CoCl2 concentrations (up to 0.10 mol kg-1). As the CoCl2 concentration increases, electronic conductivity appears in addition to ionic conductivity, and the former becomes dominant, starting from 0.38 mol kg-1. It has been shown that the nature of charge carriers is determined by the composition of metal complexes formed by CoCl2 and the macromolecular solvent PBAN. At lower concentrations, the [Co2L2Cl4]0 dimers are the predominant species (L being macromolecule side groups C{triple bond, long}N), and their dissociation is followed by the formation of mobile Cl- anions and immobile binuclear [Co2Cl3]+ complexes. As CoCl2 concentration increases, polynuclear [ConL2Cl2n]0 (n 2) complexes appear (L being C{triple bond, long}N and C{double bond, long}C groups of PBAN). Specific features of chemical bonds in ?-complexes of transition metals result in the appearance of electronic charge carriers. The abrupt increase in conductivity observed at the highest CoCl2 concentration is connected with the formation of a percolation network of polynuclear [ConL2Cl2n]0 complexes
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17.

Вид документа : Статья из журнала
Шифр издания : 54/I-60
Автор(ы) : Obydennov K. L., Klimareva E. L., Kosterina M. F., Slepukhin P. A., Morzherin Yu. Yu.
Заглавие : Influence of solvent and substituents on the reaction of N-alkylthioacetamides with dimethyl acetylenedicarboxylate: synthesis of functionalized thiophenes containing an exocyclic double bond
Место публикации : Tetrahedron Letters. - 2013. - Vol.54, №36. - С. 4876-4879
Примечания : Bibliogr. : p. 4878-4879 (25 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): solvent--alkylthioacetamides--thiophenes
Аннотация: The reaction of thioacetamides with dimethyl acetylenedicarboxylate affords 3-oxothien-2-ylidene or 4-oxothiazol-2,5-ylidene derivatives based on the structure of the thioacetamides and the solvent employed. The structural features of the 3-oxothien-2-ylidenes are discussed
\\\\expert2\\NBO\\Tetrahedron Letters\\2013, v. 54, p. 4876.pdf
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18.

Вид документа : Статья из журнала
Шифр издания : 54/H 99
Автор(ы) : Saloutin V. I., Skryabina Z. E., Burgart Ya. V., Kiseleva S. V.
Заглавие : Interaction of fluorine-containing 1,3-dicarbonyl compounds with polyamines [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1992. - Vol. 41, N 11. - С. 2046-2050
Систем. требования: http://www.springerlink.com/content/n45366ln48457h82/fulltext.pdf
Примечания : 21.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: In the reaction of fluorinated copper (II) 1,3-diketonates with diethylenetriamine (or triethylenetetramine) in CHC13, N,N'-bis (1,3-aminovinylketones) are formed in 21-35% yields. Fluorine-containing 1,3-diketones and 1,3-ketoesters, upon interaction with polyamines without solvent, undergo acid cleavage, forming the corresponding amides
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1992, 41 (11), 2046.pdf
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19.

Вид документа : Статья из журнала
Шифр издания : 54/I-69
Автор(ы) : Filyakova V. I., Ratner V. G., Karpenko N. S., Pashkevich K. I.
Заглавие : Interaction of fluoroalkyl-containing beta-diketones with amines [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1996. - Vol. 45, № 9. - С. 2163-2168
Систем. требования: http://www.springerlink.com/content/w341230mnk942876/fulltext.pdf
Примечания : 26.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The composition of products of the interaction of asymmetric fluoroalkyl-containing -diketones with amines was studied. Mixtures of regioisomeric -aminovinylketones and products of cleavage and secondary condensation are formed, depending on the temperature, the solvent, the nature of the fluorinated and nonfluorinated substituents in the -diketone, and the basicity of the amine. The major product is a -aminovinylketone in which the NH2 group is removed from the fluoroalkyl substituent. No -aminovinylimines, products of condensation involving two electrophilic centers, were observed
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1996, 45 (9), 2163.pdf
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Mukherjee A., Al-Ghezi Basim S., Zyryanov G. V., Chupakhin O. N.
Заглавие : Iron(III)-catalyzed multicomponent synthesis of highly substituted pyrroles under ball-milling conditions
Место публикации : Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов" (MOSM 2021): V международная конференция: сборник тезисов. - Екатеринбург, 2021. - С. C. PR-186
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nowadays, green chemistry plays an important role for environment. In this context, development of solvent-free ball milling or a grinding approach has attracted considerable interest in organic synthesis.1 Hence, carrying out a reaction under solvent-free conditions and at room temperature is an effective approach to eliminate the use of volatile organic compounds and to obtain the greenness in the process. On the other hands, pyrroles are the small aromatic, nitrogen-containing heterocyclic compounds present in many natural products.2 Pyrrole molecules show important biological relevance such as porphyrins, bile pigments, and coenzymes and are known to exhibit various applications as organic materials.3 In this work, we have presented a highly robust one-pot, four-component cascade cyclization reaction of α-keto aldehydes, anilines, activated alkynes, and aromatic nucleophiles to synthesize a diverse range of pharmaceutically important penta-substituted pyrroles. The reaction proceeded smoothly under ball-milling conditions in presence of iron catalyst.
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