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 (6)Каталог препринтов УрО РАН (1975 г. - ) (1)Публикации об УрО РАН (1)Труды Института высокотемпературной электрохимии УрО РАН (8)Труды сотрудников Института теплофизики УрО РАН (4)Труды сотрудников Института химии твердого тела УрО РАН (1)Расплавы (4)Публикации Чарушина В.Н. (13)
Формат представления найденных документов:
полный информационныйкраткий
Отсортировать найденные документы по:
авторузаглавиюгоду изданиятипу документа
Поисковый запрос: (<.>K=SOLVENT<.>)
Общее количество найденных документов : 55
Показаны документы с 1 по 20
 1-20    21-40   41-55 
1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Баклыков А. В., Русинов Г. Л., Русинов В. Л., Чарушин В. Н., Копчук Д.С., Зырянов Г. В., Артемьев Г. А.
Заглавие : Синтез 5-метил-1,2,4-триазоло[1,5-a]пиримидин- 7(4H)-она в сверхкритическом диоксиде углерода
Место публикации : Журнал общей химии. - 2019. - Т. 89, № 1. - С. 138-140
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 5-метил-1,2,4-триазоло[1, 5-a]пиримидин-7(4h)-он--суперкритический co2--синтез в отсутствие растворителя--5-methyl-1,2,4-triazolo[1, 5-a]pyrimidine-7(4h)-one--supercritical co2--solvent-free synthesis
Аннотация: 5-Метил-1,2,4-триазоло[1,5- a ]пиримидин-7(4 H )-он - полупродукт в синтезе антивирусного препарата Триазид® - был впервые получен в сверхкритическом CO2 (200 бар) в отсутствие растворителей путем циклоконденсации 5-амино-3- Н -1,2,4-триазола с ацетоуксусным эфиром в присутствии каталитических количеств ZnCl2 с конверсией 90% в зависимости от температуры и времени реакции.
Найти похожие

2.

Вид документа : Статья из журнала
Шифр издания : 54/S 70
Автор(ы) : Kopchuk D. S., Khasanov A. F., Chepchugov N. V., Kovalev I. S., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Solvent-free reaction of 1,2,4-triazine-5-carbonitriles with 4-(cyclohex-1-en-1-yl)morpholine. unexpected decyanation in addition to classical aza-Diels–Alder reaction
Место публикации : Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2017. - Vol. 53, № 1. - С. 99-102
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reaction of 1,2,4-triazine-5-carbonitriles with 4-(cyclohex-1-en-1-yl)morpholine under solventfree conditions has been found to follow two pathways: aza-Diels–Alder reaction and unexpected decyanation of the initial nitriles. The scope of the revealed decyanation reaction has been roughly estimated.
\\\\Expert2\\NBO\\Russian Journal of Organic Chemistry\\2017 V 53 N 1 P. 99-102.pdf
Найти похожие

3.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Irgashev R. A., Kazin N. A., Makarova N. I., Dorogan I. V., Malov V. V., Tameev A. R., Rusinov G. L., Metelitsa A. V., Minkin V. I., Charushin V. N.
Заглавие : Synthesis and properties of new π-conjugated imidazole/carbazole structures
Место публикации : Dyes and Pigments. - 2017. - Vol. 141. - С. 512-520
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): imidazoles--carbazoles--absorption spectra--photoluminescence--tddft calculations--charge mobility
Аннотация: New 3-(1H-imidazol-2-yl)-9H-carbazoles and 6,6′-di(1H-imidazol-2-yl)-9H,9′H-3,3′-bicarbazoles have been prepared, starting from 9-ethyl-9H-carbazole-3-carbaldehyde or 9,9′-diethyl-9H,9′H-[3,3′-bicarbazole]-6,6′-dicarbaldehyde through their reactions with 4-methoxyaniline or 4-fluoroaniline, benzil or 2,2′-thenil [1,2-di(thien-2,2′-yl) glyoxal] and ammonium acetate on reflux in glacial acetic acid. The obtained compounds have been shown to demonstrate an effective fluorescence in the blue spectral region, exhibiting quantum yields in the range of 0.08–0.51, depending on their molecular structure and solvent polarity. The nature of the observed absorption spectra has been elucidated by the TDDFT calculations.
Найти похожие

4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : De A., Majee A., Santra S., Kovalev I. S., Kopchuk D. S., Zyryanov G. V., Chupakhin O. N., Charushin V. N.
Заглавие : Synthesis of 2-imidazolines by co-grinding of n-tosylaziridines and nitriles
Место публикации : Mendeleev Communications. - 2020. - Vol. 30, № 2. - С. 188-189
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2-imidazolines--aziridines--grinding--heterocyclization--nitriles--solvent-free reactions
Аннотация: Solvent-free solid-state co-grinding of N-tosylaziridines and nitriles in the presence of perchloric acid as the catalyst affords 2-imidazolines in good yields.
Найти похожие

5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kopchuk D. S., Krinochkin A. P., Starnovskaya E. S., Shtaitz Y. K., Kovalev I. S., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Substitution of cyano group in position 5 of 1,2,4-triazines by carboxylic acid hydrazide residues under solvent-free conditions
Место публикации : Russian Journal of Organic Chemistry. - 2018. - Vol. 54, № 3. - С. 509-511
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Найти похожие

6.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Кабак А. С., Андрейков Е. И.
Заглавие : Применение каменноугольного пека для утилизации термореактивных полимеров и изделий на их основе
Место публикации : Углехимия и экология Кузбасса: VII Международный Российско-Казахстанский симпозиум: сборник тезисов докладов. - Кемерово, 2018. - С. 43
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The coal tar pitch can be used as active solvent in the thermal solvolysis of thermosets and products based on thermosets, including polymer-matrix composites. The properties of the recovered fillers are determined.
Найти похожие

7.

Вид документа : Статья из журнала
Шифр издания : 54/S 70
Автор(ы) : Kopchuk D. S., Chepchugov N. V., Kovalev I. S., Santra S., Rahman M., Zyryanov G. V., Charushin V. N., Chupakhin O. N., Giri K., Majee A.
Заглавие : Solvent-free synthesis of 5-(aryl/alkyl)amino-1,2,4-triazines and α-arylamino-2,2′-bipyridines with greener prospects
Место публикации : RSC Advances. - 2017. - Vol. 7, № 16. - С. 9610-9619
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A green and highly efficient method has been developed for the synthesis of 5-(aryl/alkyl)amino-1,2,4-
\\\\Expert2\\NBO\\RSC Advances\\2017 v.7 p.9610-9619.pdf
Найти похожие

8.

Вид документа : Статья из журнала
Шифр издания : 54/R 74
Автор(ы) : Santra S., Kovalev I. S., Kopchuk D. S., Zyryanov G. V., Majee A., Charushin V. N., Chupakhin O. N.
Заглавие : Role of polar solvents for the synthesis of pillar[6]arenes [Электронный ресурс]
Место публикации : RSC Advances. - 2015. - Vol. 5, № 126. - С. 104278-104282
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 104282 (26 ref.). - 18.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): host-guest complexation --water channels--high-yield synthesis
Аннотация: An efficient procedure for the synthesis of pillar[6]arenes has been developed. The procedure involves the condensation of 1,4-dialkoxybenzenes and paraformaldehyde in the presence of a catalytic amount of H2SO4 or BF3 center dot OEt2 in polar solvent media (acetonitrile, ethyl alcohol, acetone etc.). In all cases the interaction afforded pillar[6]arenes in high yields.
\\\\expert2\\nbo\\RSC Advances\\2015. Vol. 5, N 126. P. 104278-104282.pdf
Найти похожие

9.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Verbitskiy E. V., Schepochkin A. V., Makarova N. I., Dorogan I. V., Metelitsa A. V., Minkin V. I., Kozyukhin S., Emets V. V., Grinberg V., Chupakhin O. N., Rusinov G. L., Charushin V. N.
Заглавие : Synthesis, Photophysical and Redox Properties of the D-pi-A Type Pyrimidine Dyes Bearing the 9-Phenyl-9H-Carbazole Moiety [Электронный ресурс]
Место публикации : Journal of Fluorescence. - 2015. - Vol. 25, № 3. - С. 763-775
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 774-775 (51 ref.). - 18.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrimidines--carbazole--dye-sensitized solar cells
Аннотация: Novel donor-pi-acceptor dyes bearing the pyrimidine unit as an electron-withdrawing group have been synthesized by using combination of two processes, based on the microwave-assisted Suzuki cross-coupling reaction and nucleophilic aromatic substitution of hydrogen. Spectral properties of the obtained dyes in six aprotic solvents of various polarities have been studied by ultraviolet-visible and fluorescence spectroscopy. In contrast to the absorption spectra, fluorescence emission spectra displayed a strong dependence from their solvent polarities. The nature of the observed long wavelength maxima has been elucidated by means of quantum chemical calculations. The electrochemical properties of these dyes have been investigated by using cyclic voltammetry, while their photovoltaic performance was evaluated by a device fabrication study. The experimental and calculation data show that all of the dyes can be regarded as potentially good photosensitizers for dye-sensitized solar cells.
\\\\expert2\\nbo\\Journal of Fluorescence\\2015, v.25, p.763-775.pdf
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Ovchinnikova I. G., Kim G. A., Matochkina E. G., Kodess M. I., Barykin N. V., Eltsov O. S., Nosova E. V., Rusinov G. L., Charushin V. N.
Заглавие : Synthesis, photochemical and luminescent properties of (E)-2-(2-hydroxyarylethylene)-3-phenylquinazolin-4(3H)-ones [Электронный ресурс]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - Vol. 63, № 11. - С. 2467-2477
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 2477 (22 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): (e)-2-styrylquinazolin-4(3h)-ones --luminescence--ortho-hydroxystyrylquinazolinones
Аннотация: Photoinduced transformations of 2-styrylquinazolinones in solutions were studied using absorption and NMR spectroscopy methods. A possibility of control of the photochemical isomerization rate of quinazolinone 2-(hydroxyaryl)ethenyl derivatives by changing the pH of the medium was demonstrated. The bases and the solvent nature also affect the luminescence intensity of solutions of these compounds in the wavelength range of 550-650 nm. The differences in the steric organization of the ortho-hydroxystyryldiazinone system in crystals and in solutions related to the turn of the aryl group were found. Their influence on the competing processes of luminescence and photochemical transformation of the ethylene fragment were shown. The fact of reversible photo/thermal E-Z-isomerization was established for (E)-2-(2-hydroxystyryl)-3-phenylquinazolin-4(3H)-one.
\\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 63 (11), 2467-2477.pdf
Найти похожие

11.

Вид документа : Статья из журнала
Шифр издания : 54/T 19
Автор(ы) : Filimonov V. O., Abaev V. T., Beryozkina T., Galata K. A., Slepukhin P. A., Kostenko M. A., Berseneva V. S.
Заглавие : Tandem Knoevenagel Condensation and Intramolecular Cycloaddition Reactions of 2-Azidobenzaldehydes with 2-Cyanoacetamides in the Synthesis of 4-Thiocarbamoyltetrazolo-[1,5-a]Quinolines
Параллельн. заглавия :Тандем реакций конденсации по Кнёвенагелю и внутримолекулярного циклоприсоединения 2-азидобензальдегидов с 2-цианотиоацетамидами в синтезе 4-тиокарбамоилтетразоло[1,5-a]хинолинов
Место публикации : Chemistry of Heterocyclic Compounds. - 2016. - Vol. 52, № 9. - С. 721-726
Примечания : Bibliogr. : p. 726 (32 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2-azidobenzaldehydes --tetrazolo[1,5-a]quinoline --cyanoacetic acid thioamides
Аннотация: The reaction of 2-azidobenzaldehydes with 2-thioamides of cyanoacetic acid proceeds without a solvent and base at 80–90°C selectively by one of the possible routes to form tetrazolo[1,5-a]quinolines. The proposed mechanism of the reaction involves the Knoevenagel condensation and subsequent intramolecular [3+2] cycloaddition of the azide group at the C≡N bond of an intermediate acrylonitrile.
\\\\expert2\\NBO\\Chemistry of Heterocyclic Compounds\\2016, v.52, N 9, p. 721-726.pdf
Найти похожие

12.

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
Найти похожие

13.

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
Найти похожие

14.

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.
Найти похожие

15.

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.
Найти похожие

16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Saloutina L. V., Zapevalov A. Y., Kodess M. I., Slepukhin P. A., Ganebnykh I. N., Saloutin V. I., Chupakhin O. N.
Заглавие : Transformations of 4,5-bis(trifluoromethyl)imidazolidin-2-one and its N-substituted analogous in reactions with N,N-dinucleophiles
Место публикации : AIP conference proceedings. - 2022. - Vol. 2390. - Ст.020069
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chemical compounds
Аннотация: 4,5-Dihydroxy-4,5-bis(trifluoromethyl)imidazolidin-2-one and its N-methyl(phenyl)-substituted analogous were synthesized by the reaction of perfluorobiacetyl with urea and methyl(phenyl)urea. Depending on a solvent nature and character of the substituent at N-atom of the imidazolidine, different trifluoromethyl-containing heterocycles were obtained in reactions of the imidazolidin-2-ones with thiosemicarbazide and guanidine carbonate: imidazothiazol, 1,2,4-triazines, and hydantoins.
Найти похожие

17.

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.
Найти похожие

18.

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.
Найти похожие

19.

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.
Найти похожие

20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sharapov A. D., Fatykhov R. F., Khalymbadzha I. A., Santra S., Zyryanov G. V., Chupakhin O. N., Sharutin V. V., Ranu B. C.
Заглавие : Mechanochemical synthesis of coumarins via Pechmann condensation under solvent-free conditions: an easy access to coumarins and annulated pyrano[2,3-f] and [3,2-f]indoles
Место публикации : Green Chemistry. - 2022. - Vol. 24, № 6. - С. 2429-2437
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): a green protocol has been developed for the synthesis of simple coumarins and linear pyrano[2,3-f] and [3,2-f]indoles by the reaction of phenol derivatives with β-ketoesters under ball milling at ambient temperature in the presence of methanesulfonic acid as a mild acid catalyst. the significant advantages of this procedure are high yields, scalability, no use of hazardous acids or solvents, shorter reaction time, ambient temperature, low cost, and straightforward purification without column chromatography. this procedure is associated with high ecoscale metrics and a low e-factor. in contrast to traditional pechmann condensation procedures, the mechanochemical protocol leads to the synthesis of pyranoindoles with excellent regioselectivity and high yields.
Найти похожие

 1-20    21-40   41-55 
 

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