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 Найдено в других БД:Труды сотрудников Института химии твердого тела УрО РАН (5)Публикации Чарушина В.Н. (10)
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1.

Вид документа : Статья из журнала
Шифр издания : 54
Автор(ы) : Ratner V. G., Lork E., Pashkevich K. I., Roeschenthaler G.-V.
Заглавие : (E)-1,1,1-trifluoro-4-phenyl-but-2-ene-4-one and trimethyl phosphite
Место публикации : Journal of Fluorine Chemistry. - 2000. - Vol. 102, № 1-2. - С. 73-77
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The interaction of (E)-1,1,1-trifluoro-4-phenyl-but-2-ene-4-one (1) with trimethyl phosphite affords in a [4 + 1] cycloaddition the 1,2?5-oxaphospholene 2 as a sole product which upon hydrolysis is transformed into the fluoroalkyl containing ?-ketophosphonate 4. When the reaction is carried out in the presence of small mounts of water, in addition to 2 as a main product, the phosphoric acid ester 6 of the enolic dimer of ketone 1 is also formed. The molecular structure of compound 6 (monoclinic P 2(1)/c with a = 2088.60(2), b = 1403.1(3), c = 1613.8(1) pm, ? = 90, ? = 100.97(1), ? = 90°, Z = 8) was determined, indicating two independent molecules with (RR) and (SS) configuration and disordered CF3 groups.????
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2.

Вид документа : Статья из журнала
Шифр издания : 54/A 18
Автор(ы) : Levit G. L., Demin A. M., Kodess M. I., Ezhikova M. A., Sadretdinova L. Sh., Ol'shevskaya V. A., Kalinin V. N., Krasnov V. P., Charushin V. N.
Заглавие : Acidic hydrolysis of N-acyl-1-substituted 3-amino-1,2-dicarba-closo-dodecaboranes
Место публикации : Journal of Organometallic Chemistry. - 2005. - Vol. 690, № 11. - С. 2783-2786
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Acidic hydrolysis of N-acyl 1-methyl- and 1-phenyl-3-amino-1,2-dicarba-closo-dodecaboranes has been studied. It has been shown that acidic hydrolysis of diastereomeric amides of 1-methyl-3-amino-1,2-dicarba-closo-dodecaborane results in the partial racemization of the target 3-amino-1-methylcarborane. Under the similar conditions, the hydrolysis of N-acyl-3-amino-1-phenyl-1,2-dicarba-closo-dodecaboranes resulted in amide bond cleavage accompanied by simultaneous deboronation with the removal of boron atom at position 6 of carborane cage and formation of 7,8-dicarba-nido-undecaborane derivative according to 11B and 1H NMR spectroscopy.
\\\\Expert2\\nbo\\Journal of Organometallic Chemistry\\2005, v. 690, p.2783.pdf
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khonina T. G., Tishin D. S., Larionov L. P., Dobrinskaya M. N., Antropova I. P., Izmozherova N. V., Osipenko A. V., Shadrina E. V., Nikitina E. Yu., Bogdanova E. A., Karabanalov M. S., Evstigneeva N. P., Kokhan M. M., Chupakhin O. N.
Заглавие : Bioactive silicon-iron-containing glycerohydrogel synthesized by the sol-gel method in the presence of chitosan
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 11. - С. 2342-2351
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A novel biologically active nanocomposite glycerohydrogel based on two biocompatible precursors, silicon and iron glycerolates, was synthesized by the sol—gel method in the presence of chitosan (Ch). The composition and structural features of the gel were characterized by advanced analytical methods including transmission electron microscopy, X-ray diffraction, and atomic emission spectroscopy. It was shown that iron(iii) monoglycerolate undergoes partial hydrolysis under the gelation conditions and exists as a separate nanoscale phase along with the hydrolysis products in cells of the 3D Si-containing polymeric gel network. This network is formed as a result of incomplete hydrolysis of silicon glycerolates in excess glycerol followed by homo- and heterofunctional condensation of silanol groups with the formation of Si-O-Si units containing residual glyceroxy groups at the silicon atom. Chitosan forms numerous intermolecular bonds with the 3D gel network, accelerates the process of gelation, makes the gel morphostructure more ordered, and increases the stability of the gel. The Si-Fe-Ch-containing glycerohydrogel is nontoxic and possesses hemostatic and wound-healing activity, being a promising topical medication for medical and veterinary practice.
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4.

Вид документа : Статья из журнала
Шифр издания : 54/C 74
Автор(ы) : Khonina T. G., Larchenko E. Yu., Shadrina E. V., Ganebnuikh I. N., Boyko A. A., Matochkina E. G., Kodess M. I., Chupakhin O. N.
Заглавие : Composition, structure, and properties of pharmacologically active silicon dimethylglycerolates [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 12. - С. 2230-2235
Систем. требования: http://www.springerlink.com/content/l28x85534047047v/fulltext.pdf
Примечания : Bibliogr. : p. 2235 (13 ref.). - 28.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1H and 29Si NMR spectroscopy showed that the product of the reaction of dimethyldiethoxysilane with glycerol in the molar ratio 1: 2 is an equilibrium mixture of dimethyldiglyceroxysilane and low-molecular-weight condensation products. The change of viscosity of silicon dimethylglycerolates, synthesized using different excesses of glycerol, versus time was studied by viscosimetry. Composition of products of hydrolysis and condensation of silicon dimethylglycerolates is determined by their concentration in the starting aqueous solutions
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (12), 2230-2235.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : Г/S 54
Автор(ы) : Shishmakov A. B., Mikushina Yu. V.
Заглавие : Concise synthesis of silver-containing titania xerogels
Место публикации : Russian Journal of Applied Chemistry. - 2021. - Vol. 94, № 7. - С. 879-883
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): xerogel--calcination--titanium dioxide--silver
Аннотация: A concise procedure was developed for the synthesis of silver-containing xerogels Ag(0)/TiO2 [0.23.2 wt % Ag(0)], including the dissolution of AgNO3 in tetrabutoxytitanium, hydrolysis of the solution in acetic acid–water vapors, drying, and calcining the xerogel at 600–800°C. It was found by X-ray diff raction analysis and electron microscopy that the bulk of metallic silver particles (75–90%) in the material calcined at 800°C has a size of 25–45 nm. The fraction of particles (in the form of crystal intergrowths) with a diameter of 95–115 nm rises with an increase in the AgNO3 concentration at the dissolution stage; TiO2 is present in the rutile phase. At a calcination temperature of 600°C, the dominant TiO2 phase (72%) is anatase; in this case the size of silver particles is 5–10 nm.
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6.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/C 52
Автор(ы) : Chizhov D. L., Charushin V. N., Roeschenthaler G.-V.
Заглавие : Convenient Rout to Regioisomeric Fluorinated Keto-Phosphonic Acids : доклад, тезисы доклада
Место публикации : 18th ISFC international Symposium on Fluorine Chemistry. Bremen, 30th Jul.-4 Aug. 2006 г. : Final Program. Abstracts. - Bremen, 2006. - С. 260
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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7.

Вид документа : Статья из журнала
Шифр издания : 54/E 54
Автор(ы) : Krasnov V. P., Levit G. L., Charushin V. N., Kodess M. I., Kalinin V. N., Chupakhin O. N.
Заглавие : Enantiomers of 3-amino-1-methyl-1,2-dicarba-closo-dodecaborane
Место публикации : Tetrahedron: Asymmetry . - 2002. - Vol. 13, № 16. - С. 1833-1835
Примечания : Bibliogr. : p. 1835 (6 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The enantiomers of 3-amino-1-methyl-1,2-dicarba-closo-dodecaborane were prepared by means of resolution of the racemic mixture via acylation by (S)-naproxen chloride followed by separation and subsequent acid hydrolysis of each of the diastereoisomeric amides. Partial racemization of enantiomeric 3-aminocarboranes was observed during acid hydrolysis
\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2002, v.13, p.1833.pdf
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishmakov A. B., Mikushina Yu. V., Koryakova O. V.
Заглавие : Few-step synthesis of PdO/TiO2 and Pd/TiO2 xerogels
Место публикации : Inorganic Materials. - 2021. - Vol. 57, № 2. - С. 164-170
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): xerogel--titanium dioxide--palladium
Аннотация: We demonstrate a few-step technique for the synthesis of PdO/TiO2 and Pd/TiO2 (0.1–2.0 wt % Pd) xerogels, which comprises hydrolysis of a palladium nitrate solution in titanium tetrabutoxide in the vapor atmosphere over an aqueous acetic acid solution, drying, and calcination of the material between 800 and 870°C. According to X-ray diffraction and electron microscopy characterization results, after calcination at 800°C the xerogels contained palladium in the form of PdO particles ≤3–5 nm in size. The highly dispersed palladium(II) oxide covered the surface of the rutile crystallites and filled pores in between. Throughout the range of Pd(NO3)2 concentrations studied, the PdO particles were identical in size. In the material calcined at 870°C, palladium had the form of metallic particles ranging in diameter from 55 to 420 nm. Raising the palladium nitrate concentration in titanium tetrabutoxide was shown to increase the average size of the Pd particles.
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9.

Вид документа : Статья из журнала
Шифр издания : 54/F 70
Автор(ы) : Kisil' S. P., Burgart Ya. V., Saloutin V. I., Chupakhin O. N.
Заглавие : Fluoroaryl containing beta,beta-dioxoesters in the synthesis of fluorobenzopyran-4(2)-ones
Место публикации : Journal of Fluorine Chemistry. - 2001. - Vol. 108, № 2. - С. 125-131
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluoroaryl containing ?,??-dioxoesters and their copper(II) chelates have been prepared by acylation of ethyl acetoacetate with 2,6-dimethoxy-3,4,5-trifluorobenzoyl, 2-methoxy-3,4,5,6-tetrafluorobenzoyl and pentafluorobenzoyl chlorides. Cyclization of these ?,??-dioxoesters leads to formation of substituted fluorochromones. Depending on conditions, 2-methyl-5-methoxy-6,7,8-trifluoro-3-ethoxycarbonylchromone hydrolyzed to 5-hydroxy-2-methyl-6,7,8-trifluorochromone or 5-hydroxy-2-methyl-6,7,8-trifluorochromone-3-carboxylic acid. The same chromone reacts with morpholine to form a seven-substituted product and ammonium hydroxide to give 3-iminoacetyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Hydrolysis of the latter affords 3-acetyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Ethyl-2-(2,6-dimethoxy-3,4,5-trifluorobenzoyl)-3-oxobutanoates undergoes ketone-splitting to 1-(2,6-dimethoxy-3,4,5-trifluorophenyl)-1,3-butandione????
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/H 99
Автор(ы) : Levit G. L., Demin A. M., Kodess M. I., Ezhikova M. A., Sadretdinova L. Sh., Ol'shevskaya V. A., Kalinin V. N., Krasnov V. P., Charushin V. N.
Заглавие : Hydrolysis of 1-methyl- and 1-phenyl-3-amino-1,2-dicarba-closo-dodecarborane amides : доклад, тезисы доклада
Место публикации : Euroboron 3, The 3rd European Meeting on Boron Chemistry, Pruhonice-by-Prague, Czech Republic, 12-16 Sept. 2004 : abstr. . - Pruhonice-by-Prague, Czech Republic, 2004. - С. P39
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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