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:Публикации Чарушина В.Н. (6)
Формат представления найденных документов:
полный информационныйкраткий
Отсортировать найденные документы по:
авторузаглавиюгоду изданиятипу документа
Поисковый запрос: (<.>K=ALKYLATION<.>)
Общее количество найденных документов : 17
Показаны документы с 1 по 10
 1-10    11-17 
1.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/S 98
Автор(ы) : Skorik Yu.A., Gomes C. A. R. , Vasconcelos M.T.S.D., Yatluk Yu. G.
Заглавие : Synthesis, characterization and some properties of N-(2-carboxyethyl)chitosan
Место публикации : Advances in Chitin Science : Proceedings of the 5th Asia Pacific Chitin and Chitosan Symposium & Exhibition, Bangkok, Thailand, March 13-15, 2002. - Bangkoki, 2002. - Vol. 5. - С. 344+348: il.
Примечания : Bibliogr. : p. 348 (19 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Найти похожие

2.

Вид документа :
Шифр издания : 54/S 98
Автор(ы) : Ivanova A. E., Khudina O. G., Burgart Ya. V., Saloutin V. I., Kravchenko M. A.
Заглавие : Synthesis of polyfluoroalkyl-containing 1-(4-acetoxybutyl)- and 1-(4-hydroxybutyl)pyrazoles and their tuberculostatic activity
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №11. - С. 2396-2400
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): synthesis--pyrazoles--tuberculostatic activity
Аннотация: Alkylation of polyfluoroalkyl-containing pyrazoles with 4-bromobutyl acetate in acetone in the presence of potassium carbonate leads to a mixture of isomeric 1-(4-acetoxybutyl)-3-fluoroalkyl- and 1-(4-acetoxybutyl)-5-fluoroalkylpyrazoles, which in a number of cases were successfully separated by HPLC. Deacylation in acidic medium with gaseous hydrogen chloride and in basic medium with gaseous ammonia leads to 1-(4-hydroxybutyl)pyrazoles, which manifest moderate tuberculostatic activity
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (11), 2396-2400.pdf
Найти похожие

3.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Bazhin D. N., Gorbunova T. I., Zapevalov A. Ya., Saloutin V. I.
Заглавие : Synthesis of polyfluorinated ethers [Electronic resource]
Место публикации : Russian Journal of Applied Chemistry. - 2005. - Vol. 78, № 10. - С. 1646-1650
Систем. требования: http://www.springerlink.com/content/f116032167803162/fulltext.pdf
Примечания : Bibliogr. : p. 1650 (10 ref.). - 19.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Procedures for preparing polyfluorinated ethers H(CF2CF 2)nCH2OR by alkylation of the corresponding telomeric alcohols H(CF2CF2)nCH2OH (n = 1-3) with alkyl halides and alkyl tosylates were examined.
\\\\Expert2\\nbo\\Russian Journal of Applied Chemistry\\2005, v. 78, N. 10, p.1646.pdf
Найти похожие

4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khudina O. G., Ivanova A. E., Burgart Ya. V., Gerasimova N. A., Evstigneeva N. P., Saloutin V. I.
Заглавие : Synthesis of mycostatics based on 4-aryldiazenyl-3,5-dimethylpyrazoles
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1124-1130
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 3-arylhydrazinylidenepentane-2,4-dione--condensation--hydrazines--4-aryldiazenyl-3,5-dimethylpyrazoles
Аннотация: The condensation of 3-arylhydrazinylidenepentane-2,4-diones with hydrazine hydrate, 2-hydroxyethylhydrazine, benzylhydrazine hydrochloride, and 4-hydrazinylbenzenesulfonamide hydrochloride gave 4-aryldiazenyl-3,5-dimethylpyrazoles. An alternative route to the synthesis of N-substituted 4-aryldiazenylpyrazoles is based on the alkylation of NH-pyrazoles with haloalkanes. The synthesized compounds were tested for antimicrobial activity against eight pathogenic dermatophytes, yeast-like fungi of the Candida genus and the bacteria Neisseria gonorrhoeae. The structure—activity relationship analysis showed that 4-tolyldiazenylpyrazoles bearing H, AcO(CH2)4, or HO(CH2)4 substituents at the N(1) atom have the highest mycostatic activity against all the dermatophyte strains under study. However, 4-aryldiazenyl-3,5-dimethylpyrazoles proved to be quite cytotoxic against the McCoy B cell line.
Найти похожие

5.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Bazhin D. N., Kudyakova Yu.S., Gorbunova T. I., Burgart Ya. V., Zapevalov A. Ya., Saloutin V. I.
Заглавие : Synthesis and properties of water-soluble 2-aminomethylidene derivatives of 1,3-dicarbonyl compounds [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2013. - Vol.83, №7. - С. 1330-1335
Систем. требования: http://download.springer.com/static/pdf/754/art%253A10.1134%252FS1070363213070050.pdf?auth66=1397364929_ef32f46a7d782f7c38dbe4b8df9caa81&ext=.pdf
Примечания : 11.04.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): synthesis--n,n-diphenylguanidine --aminomethylidene
Аннотация: A series of [(2-dimethylamino)ethylamino]methylidene-1,3-dicarbonyl compounds was synthesized for the first time starting from the corresponding 2-ethoxymethylidene derivatives and N,N-dimethylethylenediamine. It was shown that further alkylation of aminomethylidene derivatives with methyl iodide occurs regioselectively at the tertiary nitrogen atom. Quaternization products obtained exhibit high corrosion inhibition of mild steel in hydrochloric acid medium
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2013, V. 83, N 7, p. 1330–1335.pdf
Найти похожие

6.

Вид документа :
Шифр издания : 54/R 35
Автор(ы) : Khudina O. G., Ivanova A. E., Burgart Ya. V., Kodess M. I., Saloutin V. I.
Заглавие : Regiospecific O-alkylation of 4-polyfluoroalkyl-1H-pyrimidin-2-ones
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 901-905
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): iodomethane--4-bromobutyl acetate--o-regioisomers
Аннотация: The alkylation of 4-polyfluoroalkylpyrimidin-2-ones with iodomethane, 4-bromobutyl acetate, and epichlorhydrin occurs regiospecifically to form O-regioisomers.
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (5), 901-905.pdf
Найти похожие

7.

Вид документа : Статья из журнала
Шифр издания : 54/N 91
Автор(ы) : Kozhevnikov V. N., Prokhorov A. M., Kozhevnikov D. N., Rusinov V. L., Chupakhin O. N.
Заглавие : Nucleophilic substitution of hydrogen in the reaction of 1,2,4-triazin-4-oxides with cyanamide [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2000. - Vol. 49, № 6. - С. 1122-1124
Систем. требования: http://www.springerlink.com/content/yqh65k1n2461141w/fulltext.pdf
Примечания : 27.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: It was shown that cyanamide can successfully be used in reactions of nucleophilic substitution of hydrogen with 1,2,4-triazin-4-oxides in the presence of a base to give 5-cyanoimino-1,2,4-triazines. It was found by13C NMR spectroscopy that these compounds and their alkylation products at the cyclic nitrogen atom exist in the form of 5-cyanoimino-2,5-dihydro-1,2,4-triazines
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2000, 49 (6), 1122.pdf
Найти похожие

8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moseev T. D., Nikiforov E. A., Varaksin M. V., Starnovskaya E. S., Savchuk M. I., Nikonov I. L., Kopchuk D. S., Zyryanov G. V., Chupakhin O. N., Charushin V. N.
Заглавие : Novel pentafluorophenyl- and alkoxyphenyl-appended 2,2'-bipyridine push-pull fluorophores: a convenient synthesis and photophysical studies
Место публикации : Synthesis. - 2021. - Vol. 53, № 19. - С. 3597-3607
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2,2′-bipyridines--1,2,4-triazines--polyfluoroarenes
Аннотация: A convenient method for the synthesis of new highly in non-polar solvents soluble photoactive pentafluorophenyl-substituted and extended alkoxyphenyl-substituted 2,2′-bipyridines is reported. The synthetic strategy for the preparation of such ligands involves a sequence of several structural transformations, such as O-alkylation, nucleophilic substitution of hydrogen (SN H) in 1,2,4-triazine precursors via the ‘addition–elimination’ scheme, and the subsequent conversion of the obtained 1,2,4-triazines into 2,2′-bipyridines by means of the aza-Diels–Alder reaction. The photophysical properties of the synthesized novel pentafluoroaryl-substituted 2,2′-bipyridines were comprehensively studied. The obtained photophysical data indicate the competitive advantages of the herein reported pentafluoroarylated push–pull fluorophores, bearing extended aliphatic moieties, over their analogues containing benzoxy or phenolic fragments in terms of improvement in quantum yield and well-pronounced positive solvatochromism confirmed by the mathematical analysis according to the Lippert–Mataga equation.
Найти похожие

9.

Вид документа : Статья из журнала
Шифр издания : 54/N 10
Автор(ы) : Pestov A. V., Skorik Yu.A., Kogan G., Yatluk Yu. G.
Заглавие : N-alkylation of chitosan by beta-halopropionic acids in the presence of various acceptors
Место публикации : Journal of Applied Polymer Science . - 2008. - Vol. 108, № 1. - С. 119-127
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: N-carboxyethylation of chitosan by -halopropionic acids in the presence of various proton and halogen ion acceptors was investigated. It has been observed that carboxyethylation of chitosan in aqueous medium is accompanied by the by-processes of hydrolysis and dehydrohalogenation of the -halopropionic acids yielding -hydroxypropionic acid, bis(2-carbox-yethyl) ether, and acrylic acid. Degree of carboxyethyl substitution (DS) of chitosan and the relative rates of the by-processes varied significantly depending on the conditions used and nature of the proton or halogen ion acceptor. At carboxyethylation of chitosan with the alkaline -bromopropionates, the DS increased in the order Cs+ Rb- K+ sim; Na+ Li-.
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания : 54/N 10
Автор(ы) : Skorik Yu.A., Gomes C. A. R. , Vasconcelos M.T.S.D., Yatluk Yu. G.
Заглавие : N-(2-Carboxyethyl)chitosans: Regioselective synthesis, characterisation and protolytic equilibria
Место публикации : Carbohydrate Research. - 2003. - Vol. 338, № 3. - С. 271-276
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: N-(2-Carboxyethyl)chitosans were obtained by reaction of low molecular weight chitosan with a low degree of acetylation and 3-halopropionic acids under mild alkaline media (pH 8-9, NaHCO3) at 60°C. The chemical structure of the derivatives obtained was determined by 1H and 13C NMR spectroscopies. It was found that alkylation of chitosan by 3-halopropionic acids proceeds exclusively at the amino groups. The products obtained are described in terms of their degrees of carboxyethylation and ratio of mono-, di-substitution and free amine content. The protonation constants of amino and carboxylate groups of a series of N-(2-carboxyethyl)chitosans were determined by pH-titration at ionic strength 0.1 M KNO3 and 25°C. © 2002 Elsevier Science Ltd. All rights reserved.
Найти похожие

 1-10    11-17 
 

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