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 Найдено в других БД:Публикации Чарушина В.Н. (17)
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Общее количество найденных документов : 59
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1.
Инвентарный номер: нет.
   

   
    Bacterial degradation of PCB 70 and its hydroxy derivatives is an environmentally friendly way to destroy pops / T. D. Kir'yanova, D. O. Egorova, T. I. Gorbunova, M. G. Pervova // Bio Web of Conferences : International Scientific and Practical Conference “Innovations, Technological Solutions and Management in Modern Biotechnology and Biomedicine” (ITSM-2022). - Pushchino, 2023. - P09002
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: One of the problems of our time is the environmentally safe destruction of polychlorinated biphenyls (PCBs) and their hydroxylated derivatives. The aim of the study was to investigate the features and prospects of the decomposition of PCB 70 (2,5,3',4'-tetrachlorobiphenyl) and hydroxylated chlorobiphenyls derived from it by Rhodococcus wratislaviensis strain CH628. As a result of the application of methods of periodic cultivation, gas chromatography and light spectrometry, it was found that the efficiency of destruction of PCB 70 1 g of cells of strain CH628 was 90 mg PCB/day, and the same indicator for a mixture consisting of hydroxy derivatives obtained from PCB 70 was 56 mg PCB/day. It was shown that the strain uses all components of the mixture of hydroxy-PCB 70 as a growth substrate, but with different degradation rates. When cultivated in a mineral medium with PCB 70 or a mixture of hydroxy-PCB 70, strain CH628 forms biofilms. The analysis of the obtained results shows that the use of the Rhodococcus wratislaviensis CH628 strain will make it possible to develop a technology for the environmentally safe destruction of PCB 70 and hydroxy-PCBs derived from it.

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2.
Инвентарный номер: нет.
   

   
    Hydrogen-donor properties of the anthracene fraction of coal tar in the reactions of thermal solvolysis / A. P. Krasikova, E. I. Andreykov, Yu. A. Dikovinkina [и др.] // Coal chemistry and ecology of Kuzbass : XII International Russian-Kazakh Symposium. - Kemerovo, 2023. - С. 50
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactions of hydrogen transfer from anthracene oil to model organic compounds – hydrogen acceptors are investigated. Solvolysis of thermosetting polymers in anthracene oil has been carried out.

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3.
Инвентарный номер: нет.
   

   
    Reduction of trifluoromethyl-containing 4-nitroso- and 4-arylazopyrazoles as a method for 4-amino-3-trifluoromethylpyrazoles synthesis / N. A. Elkina, A. N. Perminova, N. A. Agafonova [et al.] // Russian Journal of General Chemistry. - 2022. - Т. 92, № 9. - P1591-1603
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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4.
Инвентарный номер: нет.
   

   
    Investigation of hydrogen transfer from coal tar pitch and petroleum pitches using a-methylstyrene as hydrogen acceptor / E. I. Andreikov, A. P. Krasikova, M. G. Pervova, A. S. Kabak // Chemistry for sustainable development. - 2022. - Vol. 30, № 5. - P446-454
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
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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5.
Инвентарный номер: нет.
   

   
    Synthesis of δ-Valerolactone Using Stable Hydrogen Peroxide Derivatives / Y. V. Solovyova, A. V. Pestov, I. S. Puzyrev [et al.] // Russian Journal of Organic Chemistry. - 2022. - Vol. 58, № 4. - P480-483
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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6.
Инвентарный номер: нет.
   

   
    Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability / N. S. Boltacheva, P. A. Slepukhin, M. G. Pervova [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 4. - P1464-1473
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nitrosation of lithium 1,3-diketonates bearing fluoroalkyl and aryl (or hetaryl) substituents in positions 1 and 3 results in 3-polyfluoroalkyl-1,2,3-propanetrione 2-oximes (from this point on, oximes). Under similar conditions, lithium (Z)-1,1,1-trifluoro-4-oxo-4-(thien-2-yl)-2-buten-2-olate forms a hydration product of the corresponding oxime. Nitrosation of fluoroalkyl-containing lithium 1,3-diketonates is accompanied by retro-decomposition of the initial lithium 1,3-diketonates and the target oximes (or their hydration products) followed by oxidation and hydrolysis of the reaction products. Under the GC-MS conditions, the oximes undergo partial thermal decomposition to 2-aryl(hetaryl)-2-oxoethanenitriles. An analysis of solutions of the oximes in DMSO-d6 by 1H and 19F NMR spectroscopies revealed isomerization and hydration of these compounds. The temperature ranges of stability of the oximes were determined by thermogravimetric analysis and differential thermal analysis. The molecular and crystal structures of 4,4-difluoro-1-(4-methoxyphenyl)-1,2,3-butanetrione 2-oxime and 4,4,4-trifluoro-1-(thien-2-yl)-1,2,3-butanetrione 2-oxime were determined by X-ray diffraction.

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7.
Инвентарный номер: нет.
   

   
    New approach to biologically active indolo[2,3-b]quinoxaline derivatives through intramolecular oxidative cyclodehydrogenation / G. Sadykhov, D. V. Belyaev, M. G. Pervova [et al.] // ChemistrySelect. - 2022. - Vol. 7, № 18. - Pe202200497
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient synthetic protocol to antiviral agent B-220 and a series of similar indolo[2,3-b]quinoxaline derivatives has been developed. This synthetic approach is based on Buchwald-Hartwig cross-coupling and subsequent annulation by intramolecular oxidative cyclodehydrogenation. For the first time, 6H-indolo[2,3-b]quinoxaline amine derivatives were evaluated for antimycobacterial activity. The moderate bacteriostatic effect against Mycobacterium tuberculosis H37Rv was found. A plausible mechanism of antibacterial action was elucidated by the molecular docking.

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8.
Инвентарный номер: нет.
   

   
    Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability / N. S. Boltacheva, P. A. Slepukhin, M. G. Pervova [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 7. - P1464-1473
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nitrosation of lithium 1,3-diketonates bearing fluoroalkyl and aryl (or hetaryl) substituents in positions 1 and 3 results in 3-polyfluoroalkyl-1,2,3-propanetrione 2-oximes (from this point on, oximes). Under similar conditions, lithium (Z)-1,1,1-trifluoro-4-oxo-4-(thien-2-yl)-2-buten-2-olate forms a hydration product of the corresponding oxime. Nitrosation of fluoroalkyl-containing lithium 1,3-diketonates is accompanied by retro-decomposition of the initial lithium 1,3-diketonates and the target oximes (or their hydration products) followed by oxidation and hydrolysis of the reaction products. Under the GC-MS conditions, the oximes undergo partial thermal decomposition to 2-aryl(hetaryl)-2-oxoethanenitriles. An analysis of solutions of the oximes in DMSO-d6 by 1H and 19F NMR spectroscopies revealed isomerization and hydration of these compounds. The temperature ranges of stability of the oximes were determined by thermogravimetric analysis and differential thermal analysis. The molecular and crystal structures of 4,4-difluoro-1-(4-methoxyphenyl)-1,2,3-butanetrione 2-oxime and 4,4,4-trifluoro-1-(thien-2-yl)-1,2,3-butanetrione 2-oxime were determined by X-ray diffraction.

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9.
Инвентарный номер: нет.
   
   A 10

   
    A new synthesis of 4'-trifluoromethyl-2,2':6',2"-terpyridine / V. I. Filyakova, N. S. Boltacheva, M. G. Pervova, V. N. Charushin // Mendeleev Communications. - 2021. - Vol. 31, № 3. - P388-389
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ORGANOFLUORINE COMPOUNDS -- b-AMINOVINYL KETONES -- REGIOISOMERISM -- HETEROCYCLIZATION -- PYRIDINES -- 2,2':6',2''-TERPYRIDINES
Аннотация: Reflux of two isomeric 3-amino-4,4,4-trifluoro-1-(2-pyridyl)but-2-en-1-one and 3-amino-1,1,1-trifluoro-4-(2-pyridyl)-but-3-en-2-one in acetic acid affords 4′-trifluoromethyl-2,2′:6′,2″-terpyridine (37%) with 1.4% admixture of 6′-trifluoromethyl-2,2′:4′,2″-terpyridine.

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10.
Инвентарный номер: нет.
   
   A 10

   
    A new approach to 4-arylstyrenes: microwave-assisted synthesis and photophysical properties / M. Z. Eddin, M. G. Pervova, E. F. Zhilina [et al.] // Russian chemical bulletin. - 2021. - Vol. 70, № 11. - P2139-2144
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
STYRENE -- 4-VINYLBIPHENYL DERIVATIVES -- SUZUKi—MIYAURA CROSS-COUPLING -- FLUORESCENCE

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