Главная Новые поступления Описание Шлюз Z39.50

Базы данных


Труды сотрудников Института органического синтеза УрО РАН - результаты поиска

Вид поиска

Область поиска
в найденном
 Найдено в других БД:Каталог книг и продолжающихся изданий (1)Публикации Чарушина В.Н. (26)
Формат представления найденных документов:
полныйинформационныйкраткий
Отсортировать найденные документы по:
авторузаглавиюгоду изданиятипу документа
Поисковый запрос: (<.>U=Г<.>)
Общее количество найденных документов : 131
Показаны документы с 1 по 20
 1-20    21-40   41-60   61-80   81-100   101-120      
1.
Инвентарный номер: нет.
   


   
    2-Aminooxazoles as novel dienophiles in the inverse demand Diels–Alder reaction with 1,2,4-triazines / A. P. Krinochkin, G. Mallikarjuna Reddy, D. S. Kopchuk [et al.] // Mendeleev Communications. - 2021. - Vol. 31, № 4. - P542-544
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- OXAZOL-2-AMINES -- DIELS–ALDER REACTION -- 2,2'-BIPYRIDIN-3-OLS
Аннотация: High temperature coupling of 6-aryl-5-cyano-3-(pyridin-2-yl)-1,2,4-triazines with 2-amino-4-aryloxazoles proceeds as the inverse demand Diels–Alder reaction between the oxazole moiety as dienophile and the 1,2,4-triazine moiety as diene to construct new 4,5-diaryl-6-cyano-3-hydroxypyridin-2-yl fragment. A reaction mechanism is proposed, and the structure of the key-product is proved by the X-ray diffraction analysis.

Найти похожие

2.
Инвентарный номер: нет.
   
   T 89


    Tseitler, T. A.
    5-thienyl-2-cycloalkylamino-1,3,4-thiadiazines, hydrobromides / T. A. Tseitler, L. P. Sidorova, O. N. Chupakhin // Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов (MOSM2018): вторая международная научно-практическая конференция : материалы и доклады. - Екатеринбург, 2019. - С. 109
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ

Найти похожие

3.
Инвентарный номер: нет.
   


   
    9-ethyl-3-{6-(het)aryl-[1,2,5]oxadiazolo[3,4-b]pyrazin-5-yl}-9H-carbazoles: synthesis and study of sensitivity to nitroaromatic compounds / E. V. Verbitskiy, Y. A. Kvashnin, G. L. Rusinov, V. N. Charushin, A. A. Baranova, Y. A. Yakovleva, K. O. Khokhlov // Russian chemical bulletin. - 2018. - Vol. 67, № 6. - P1078-1082
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ

Найти похожие

4.
Инвентарный номер: нет.
   


   
    9-этил-3-{6-(гет)арил-[1,2,5]оксадиазоло[3,4-b]пиразин-5-ил}-9H-карбазолы: синтез и изучение сенсорных свойств в отношении нитроароматических соединений / Е. В. Вербицкий, Ю. А. Квашнин, А. А. Баранова, Ю. А. Яковалева, К. О. Хохлов, Г. Л. Русинов, В. Н. Чарушин // Известия Академии наук. Серия химическая. - 2018. - № 6. - С. 1078-1082
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ФУРАЗАНО[3, 4-B]ПИРАЗИНЫ -- С-Н-ФУНКЦИОНАЛИЗАЦИЯ -- КАРБАЗОЛЫ -- ТУШЕНИЕ ФЛУОРЕСЦЕНЦИИ -- ХЕМОСЕНСОРЫ
Аннотация: Прямой некатализируемой переходными металлами функционализацией С-Н-связи в пиразиновом кольце осуществлен синтез 5-(9-этил-9Н-карбазол-3-ил)-замещенных 6-(гет)арил[1,2,5]оксадиазоло[3,4-b]пиразинов. Изучены их фотофизические и сенсорные свойства по отношению к парам нитробензола и 2,4-динитротолуола с использованием мобильного обнаружителя нитровзрывчатых веществ «Нитроскан» (Екатеринбург, Россия).

Найти похожие

5.
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

Найти похожие

6.
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.

Найти похожие

7.
Инвентарный номер: нет.
   
   S 20


    Santra, S.
    A pase-based approach towards synthesis of epoxy ketones / S. Santra, A. Mukherjee, G. V. Zyryanov, A. Majee // Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов (MOSM2018): вторая международная научно-практическая конференция : материалы и доклады. - Екатеринбург, 2019. - С. 110
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ

Найти похожие

8.
Инвентарный номер: нет.
   
   A 10


   
    A practicable synthesis of 2,3-disubstituted 1,4-dioxanes bearing a carbonyl functionality from α,β-unsaturated ketones using the williamson strategy / A. De, A. Majee, S. Santra [et al.] // Organic & biomolecular chemistry. - 2021. - Vol. 19, № 6. - P1278-1286
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: We have observed that a reagent combination of NaIO4 and NH2OH·HCl reacts with α,β-unsaturated ketones followed by the nucleophile ethylene glycol allowing the synthesis of 2,3-disubstituted 1,4-dioxanes using cesium carbonate as a base under Williamson ether synthesis. This reaction is useful for the synthesis of functionalized 1,4-dioxane having a carbonyl functionality. A variety of 2,3-disubstituted 1,4-dioxanes have been synthesized using these reaction conditions. A probable reaction mechanism has also been proposed.

Найти похожие

9.
Инвентарный номер: нет.
   
   A 22


   
    Adsorption properties of mesoporous carbon synthesized by pyrolysis of zinc glycerolate / I. S. Puzyrev, E. I. Andreikov, V. A. Osipova [et al.] // Russian chemical bulletin. - 2021. - Vol. 70, № 5. - P805-810
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Mesoporous carbon of lamellar morphology was synthesized by the thermal decomposition of zinc glycerolate in an inert atmosphere followed by the removal of zinc oxide from the ZnO/C composite. The obtained material was characterized by scanning electron microscopy, Raman spectroscopy, and low-temperature adsorption of nitrogen. Mesoporous carbon is remarkable for a high adsorption rate of methylene blue dye from aqueous solutions with the maximum adsorption capacity toward the dye equal to 1680 mg g−1.

Найти похожие

10.
Инвентарный номер: нет.
   
   A 53


   
    An expedient solvent-free c-benzylation of 4-hydroxycoumarin with styrenes / R. Chatterjee, A. Majee, A. Mukherjee [et al.] // Mendeleev Communications. - 2021. - Vol. 31, № 1. - P123-124
ББК Г
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.

Найти похожие

11.
Инвентарный номер: нет.
   
   A 99


   
    Azapyrene-based fluorophores: synthesis and photophysical properties / O. S. Taniya, A. F. Khasanov, M. V. Varaksin [et al.] // New Journal of Chemistry. - 2021. - Vol. 45, № 45. - P20955-20971
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Azapyrenes are the nitrogen isosteres of pyrene. Based on theoretical and experimental studies, electron–acceptor azapyrene domains may be considered as convenient scaffolds for constructing a large variety of “push–pull” π-conjugated chromophores with pronounced ICT properties. Over the past decade, due to the unrelenting interest in functional materials and modern methodologies such as cross-coupling, peri-annulation, direct C–H-functionalization, etc., methods for the synthesis of aryl(alkyl) K-functionalized azapyrenes and other derivatives have been developed, and their photophysical and electrochemical properties have been studied. This short review aims at critical analysis of the best known/modern methods for the preparation of functionalized azapyrene derivatives, as well as an assessment of their photophysical/electrochemical properties in comparison with the structural and electronic properties of the parent pyrene.

Найти похожие

12.
Инвентарный номер: нет.
   
   B 24


    Barabanov, M. A.
    Biological activity and synthesis of 5,6-dihydroxyindole-2-carboxylic acid – biosynthetic precursor of melanins (microreview) / M. A. Barabanov, G. S. Martyanov, A. V. Pestov // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 4. - P417-419
УДК
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The microreview considers the biological activity and methods of obtaining natural melanin pigments and their biosynthetic precursor 5,6-dihydroxyindole-2-carboxylic acid. The key methods for the synthesis of 5,6-dihydroxyindole-2-carboxylic acid, published over the past 8 years (20122020), are presented.

Найти похожие

13.
Инвентарный номер: нет.
   
   R 95


    Rusinov, V. L.
    Biologically active azolo-1,2,4-triazines and azolopyrimidines / V. L. Rusinov, V. N. Charushin, O. N. Chupakhin // Russian chemical bulletin. - 2018. - Vol. 67, № 4. - P573-599
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ

Найти похожие

14.
Инвентарный номер: нет.
   
   B 68


   
    Blue-light-promoted radical c-h azolation of cyclic nitrones enabled by selectfluor® / A. A. Akulov, M. V. Varaksin, A. N. Tsmokalyuk [et al.] // Green Chemistry. - 2021. - Vol. 23, № 5. - P2049-2057
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: An original approach to achieve the C(sp2)–H azolation of cyclic aldonitrones mediated by Selectfluor® has first been employed. By exploiting a metal-free, visible-light-promoted cross-dehydrogenative C–N coupling reaction between model aldonitrones, 2H-imidazole 1-oxides, and NH-containing azoles, a series of novel azaheterocyclic derivatives have been obtained in yields up to 94%. The elaborated protocol has proved to be appropriate for gram-scale processes and displayed potential for utilization in the synthesis of novel structural analogues of lanabecestat. Besides, mechanistic studies have revealed that this coupling reaction is likely to proceed via a nitroxide-involving radical pathway, encompassing a chain of electron transfer events, such as hydrogen atom transfer (HAT) and single electron transfer (SET).

Найти похожие

15.
Инвентарный номер: нет.
   
   S 68


    Smyshliaeva, L. A.
    C-H functionalization methodology in the synthesis of novel azaheterocyclic carboranes / L. A. Smyshliaeva, M. V. Varaksin, V. N. Charushin, O. N. Chupakhin // Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов (MOSM2018): вторая международная научно-практическая конференция : материалы и доклады. - Екатеринбург, 2019. - С. 206
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ

Найти похожие

16.
Инвентарный номер: нет.
   
   R 32


    Reddy, N. B.
    Ceric ammonium nitrate (can) catalyzed synthesis and α-glucosidase activity of some novel tetrahydropyridine phosphonate derivatives / N. B. Reddy, G. V. Zyryanov // Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов (MOSM2018): вторая международная научно-практическая конференция : материалы и доклады. - Екатеринбург, 2019. - С. 114-115
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ

Найти похожие

17.
Инвентарный номер: нет.
   
   C 55


   
    Choice of optimal conditions for the dynamic concentration of silver(I) ions from complex solutions with sulfoethylated polyaminostyrenes / L. M. Alifkhanova, Y. S. Petrova, S. N. Bosenko [и др.] // Russian Journal of Inorganic Chemistry. - 2021. - Т. 66, № 4. - С. 578-585
ББК Г
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.

Найти похожие

18.
Инвентарный номер: нет.
   
   C 73


   
    Combination of the Snh/aza-diels–alder reactions as effective synthetic approach to 8-hydroxy(methoxy)-substituted 2-[6-(1-methylindol-3-yl)pyridin-2-yl]quinoline ligands/fluorophores / M. I. Savchuk, D. S. Kopchuk, I. N. Egorov [et al.] // Russian Journal of General Chemistry. - 2021. - Vol. 91, № 5. - P779-784
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZA-DIELS–ALDER REACTION -- 1,2,4-TRIAZINES -- 8-METHOXYQUINOLINE -- DEMETHYLATION -- AUTOCLAVE
Аннотация: 8-Hydroxy(methoxy)-substituted 2-[6-(1-methylindol-3-yl)pyridin-2-yl]quinoline ligands were synthesized by means of combination of SNH reaction between 8-methoxy-substituted 2-(6-aryl-1,2,4-triazin-3-yl)quinolones and indole and aza-Diels–Alder reaction of the obtained 1,2,4-triazines with 2,5-norbornadiene. The demethylation of quinoline moiety of 1,2,4-triazine precursor during aza-Diels–Alder reaction in autoclave was demonstrated.

Найти похожие

19.
Инвентарный номер: нет.
   
   S 54


    Shishmakov, A. B.
    Concise synthesis of silver-containing titania xerogels / A. B. Shishmakov, Yu. V. Mikushina // Russian Journal of Applied Chemistry. - 2021. - Vol. 94, № 7. - P879-883
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
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.

Найти похожие

20.
Инвентарный номер: нет.
   
   D 46


   
    Design and antioxidant properties of bifunctional 2H-imidazole-derived phenolic compounds-a new family of effective inhibitors for oxidative stress-associated destructive processes / E. L. Gerasimova, E. R. Gazizullina, M. V. Borisova [et al.] // Molecules. - 2021. - Vol. 26, № 21. - Ст. 6534
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
2H-IMIDAZOLE -- POLYPHENOLS -- ANTIOXIDANT CAPACITY -- ANTIRADICAL CAPACITY
Аннотация: The synthesis of inhibitors for oxidative stress-associated destructive processes based on 2H-imidazole-derived phenolic compounds affording the bifunctional 2H-imidazole-derived phenolic compounds in good-to-excellent yields was reported. In particular, a series of bifunctional organic molecules of the 5-aryl-2H-imidazole family of various architectures bearing both electron-donating and electron-withdrawing substituents in the aryl fragment along with the different arrangements of the hydroxy groups in the polyphenol moiety, namely derivatives of phloroglucinol, pyrogallol, hydroxyquinol, including previously unknown water-soluble molecules, were studied. The structural and antioxidant properties of these bifunctional 5-aryl-2H-imidazoles were comprehensively studied. The redox transformations of the synthesized compounds were carried out. The integrated approach based on single and mixed mechanisms of antioxidant action, namely the AOC, ARC, Folin, and DPPH assays, were applied to estimate antioxidant activities. The relationship “structure-antioxidant properties” was established for each of the antioxidant action mechanisms. The conjugation effect was shown to result in a decrease in the mobility of the hydrogen atom, thus complicating the process of electron transfer in nearly all cases. On the contrary, the conjugation in imidazolyl substituted phloroglucinols was found to enhance their activity through the hydrogen transfer mechanism. Imidazole-derived polyphenolic compounds bearing the most electron-withdrawing functionality, namely the nitro group, were established to possess the higher values for both antioxidant and antiradical capacities. It was demonstrated that in the case of phloroglucinol derivatives, the conjugation effect resulted in a significant increase in the antiradical capacity (ARC) for a whole family of the considered 2H-imidazole-derived phenolic compounds in comparison with the corresponding unsubstituted phenols. Particularly, conjugation of the polyphenolic subunit with 2,2-dimethyl-5-(4-nitrophenyl)-2H-imidazol-4-yl fragment was shown to increase ARC from 2.26 to 5.16 (104 mol-eq/L). This means that the considered family of compounds is capable of exhibiting an antioxidant activity via transferring a hydrogen atom, exceeding the activity of known natural polyphenolic compounds.

Найти похожие

 1-20    21-40   41-60   61-80   81-100   101-120      
 

Сиглы отделов ЦНБ УрО РАН


  бр.ф. - Бронированный фонд

  бф - Научно-библиографический отдел

  БХЛ - Фонд художественной литературы

  ИИиА -Фонд исторической литературы в ЦНБ УрО РАН

  ИМЕТ -Отдел ЦНБ в Институте металлургии УрО РАН

  кх - Отдел фондов (книгохранениe)

  МБА - Межбиблиотечный абонемент

  мф - Методический фонд

  ок - Отдел научной каталогизации

  оку - Отдел комплектования и учета

  орф - Обменно-резервный фонд

  пф - Читальный зал деловой и патентной информации

  рк - Фонд редкой книги

  ч/з - Главный читальный зал

  эр - Зал электронных ресурсов

  

Сиглы библиотек институтов и НЦ УрО РАН
© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)
Яндекс.Метрика