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 Найдено в других БД:Публикации Чарушина В.Н. (34)
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1.
Инвентарный номер: нет.
   


   
    Synthesis and study of Si–Ti mixed oxides modified with dibenzo-18-crown-6 complexes with metal cations / O. V. Fedorova, A. N. Murashkevich, E. S. Filatova [и др.] // Russian journal of inorganic chemistry. - 2022. - Т. 67, № 10. - С. 1527-1536
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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2.
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    Stereoselective synthesis of dihydropyrimidinethione podand in the presence of L-proline or 4-hydroxy-L-proline and metal nitrates / E. S. Filatova, O. V. Fedorova, I. G. Ovchinnikova [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 7. - P1506-1513
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The asymmetric Biginelli reaction involving a 3-oxobutanoyl-containing podand, benzaldehyde, and thiourea was studied using secondary amines as a chiral inductor, Brönsted acid as a catalyst, and metal salts (especially metal nitrates) as an additive of asymmetric catalysis (AAC) was studied. The tuberculostatically active dihydropyrimidine-thione-containing podand was synthesized with an enantiomeric excess of 57% in the presence of 4-hydroxy-L-proline. In the presence of metal nitrates, the influence of the ionic radius of the cation on the enantioselective excess of the reaction under study was observed, which made it possible to propose a possible mechanism of chiral induction controlled by the complexing ability of the initial β-ketoester-containing podand with metal ions and coordination of the reagents in the transition states.

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3.
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   F 33


    Fedorova, O. V.
    Metal oxides in multicomponent synthesis of heterocycles / O. V. Fedorova, Y. A. Titova, I. G. Ovchinnikova // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 9. - P900–904
УДК
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
HETEROCYCLIC COMPOUNDS -- METAL OXIDES -- CHEMOSELECTIVE SYNTHESIS
Аннотация: In this review we consider the possibilities for using metal oxides as heterogeneous catalysts of multicomponent reactions, leading to pharmacologically relevant heterocyclic compounds. Publications from years 2013–2021 are analyzed. The information has been arranged according to the number of atoms in the target heterocycle.

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4.
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    Metadynamics in studying the bigenelli reaction mechanism with the participation of chiral inductors / O. S. Borodina, G. I. Makarov, E. V. Bartashevich, I. G. Ovchinnikova, O. V. Fedorova, Y. A. Titova // Mendeleev 2021: book of abstracts XII international conference on chemistry for young scientists. - Saint Petersburg, 2021. - P132
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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5.
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   S 98


   
    Synthesis and spectroscopic study of Si, Ti, Mg, and Zn oxides modified by L-Proline / O. V. Koryakova, M. S. Valova, Y. A. Titova [et al.] // Journal of Applied Spectroscopy. - 2021. - Vol. 88, № 3. - P519-527
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Individual and mixed oxides of Zn, Mg, Si, and Ti modified with L-proline during their solgel synthesis have been obtained. The IR spectra of these oxides studied in detail show changes in the vibrational band parameters of the siliconoxygen and metal–oxygen bonds. Enhancement of the amount of basic sites on the SiO2–TiO2 mixed oxide was found after removal of L-proline from the surface. The use of SiO2–Mg(OH)2* L-proline composite as a catalyst leads to an enhanced enantiomeric excess of some asymmetric Biginelli reaction products up to 18%.

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6.
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   S 98


   
    Synthesis and properties of heterocycle-containing podands / E. S. Filatova, O. V. Fedorova, G. L. Rusinov, O. N. Charushin // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 10. - P971–983
УДК
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
HETEROCYCLE-CONTAINING PODANDS -- GLYCOL -- OLIGO(OXYETHYLENE) SPACER -- OPEN-CHAIN ANALOGS OF CROWN ETHERS
Аннотация: The review is devoted to noncyclic analogs of crown ethers (podands) containing an oxyethylene spacer and heterocyclic fragments at one or both of its ends. The paper considers publications on the methods of obtaining and properties of podands for the 2010–2021 period.

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7.
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    Features of a multicomponent biginelli reaction involving 3-oxobutanoyl-containing podands, aromatic aldehydes, and 1,2,4-triazol-3-amine / E. S. Filatova, O. V. Fedorova, K. A. Chistyakov [et al.] // Chemistry of heterocyclic compounds. - 2020. - Vol. 56, № 1. - P88-91
Кл.слова (ненормированные):
DIHYDROPYRIMIDINE -- MONOSUBSTITUTED PODAND -- PODAND -- TRIAZOLO[1,5-А]PYRIMIDINE -- TRIAZOLO[4,3-А]PYRIMIDINE -- TUBERCULOSTATIC ACTIVITY
Аннотация: [Figure not available: see fulltext.] A reaction of 3-oxobutanoyl-containing podands with thiophene-2-carbaldehyde (or benzaldehyde) and 3-amino-1,2,4-triazole gave podands featuring a 4,7-dihydro[1,2,4]triazolo[1,5-а]pyrimidine motif. It was established that the process was accompanied by the formation of [4,3-а]-isomers, which occurred in a slight excess during the synthesis of a podand containing a phenyl group at position 7 and, on the other hand, were observed as the minor products during the synthesis of podands bearing a thiophen-2-yl substituent. Trace amounts of monosubstituted podands were also detected, containing a free hydroxy group along with the triazolodihydropyrimidine pharmacophore.

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8.
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    Synthesis and physicochemical and catalytic properties of composites in the Sio2–Zro2 system / A. N. Murashkevich, O. A. Alisienok, E. S. Novik [et al.] // Inorganic materials. - 2020. - Vol. 56, № 4. - P430-436
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ACID-BASE PROPERTIES -- CATALYSIS -- COMPOSITE -- SILICA -- SPECIFIC SURFACE AREA -- ZIRCONIA
Аннотация: Using coprecipitation, a sol–sol method, and molecular layering, we have synthesized SiO2–ZrO2 composites with SiO2 : ZrO2 ratios from 1 : 1 to 9 : 1 and a large specific surface area, which increases with growth silicon-containing component concentration. Using adsorption of Hammett indicators, we have assessed the concentration of acid–base centers in the pK range 1.3–9.6, which has been shown to vary from 68 to 160 μmol/g. Elemental analysis and IR spectroscopy data have demonstrated the presence of not only water but also nitrate ions and carbon dioxide on the surface of the samples. It has been shown that the use of nanoparticulate SiO2–ZrO2 oxides as heterogeneous catalysts—promoters for (2S,4R)-4-hydroxyprolyl-(S)-1-phenylethylamine trifluoroacetate, a chiral inducer in the asymmetric Biginelli reaction, makes it possible to raise ee (enantiomeric excess) from 39 to 68% and the reaction yield from 29 to 55%.

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9.
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    4-hydroxyproline containing podands as new chiralcatalysts for the asymmetric biginelli reaction / O. V. Fedorova, Y. A. Titova, I. G. Ovchinnikova, G. L. Rusinov, V. N. Charushin // Mendeleev Communications. - 2018. - Vol. 28, № 4. - P357-358
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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10.
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    Crown ether–Sio2–Tio2 composites in the sorption of metal ions from acidic aqueous solutions / O. V. Fedorova, O. V. Koryakova, G. L. Rusinov, V. N. Charushin, A. I. Maksimovskikh, A. N. Murashkevich, V. N. Rychkov // Russian journal of general chemistry. - 2018. - Vol. 88, № 2. - P362-367
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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