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 Найдено в других БД:Каталог диссертаций и авторефератов диссертаций УрО РАН (5)Каталог препринтов УрО РАН (1975 г. - ) (2)Труды Института высокотемпературной электрохимии УрО РАН (8)Труды сотрудников Института теплофизики УрО РАН (10)Труды сотрудников Института химии твердого тела УрО РАН (106)Расплавы (9)Публикации Чарушина В.Н. (8)
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Общее количество найденных документов : 49
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 1-10    11-20   21-30   31-40   41-49 
1.
Инвентарный номер: нет.
   


   
    1H-pyrazole-appended pyridines and their 1,2,4-triazine precursors: a rational synthesis and in silico and in vitro evaluation of anti-cancer activity / A. P. Krinochkin, Y. K. Shtaitz, A. K. Rammohan [et al.] // European Journal of Organic Chemistry. - 2022. - Vol. 2022, № 22. - Pe202200227
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: An operationally facile and high yielding one-pot protocol has been developed for the preparation of pyridines appended with pyrazole via NH linker. This protocol includes SNipso/aza-Diels-Alder reactions in up to 54 % yields starting from 1,2,4-triazine precursors. All the synthesized compounds have been evaluated for their in silico activity against JAK1, SYK, and FAK1 kinases. The most promising compound was tested in vitro using A-172, Hs578T, and HepG2 cancer cell lines and exhibited considerable cytotoxicity with IC50 values 50 μM in A-172 and HepG2 cell lines. Anticancer in vitro activity correlates well with the predicted in silico data.

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2.
Инвентарный номер: нет.
   
   R 95


    Rusinov, G. L.
    A convenient sonochemical synthesis of vicinally substituted 3-hydroxylaminopyridines [Electronic resource] / G. L. Rusinov, I. E. Filatov, K. I. Pashkevich // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1993. - Vol. 42, № 2. - P325-327
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method of synthesis of vicinally substituted N-(3-pyridyl)hydroxylamines by reducing the corresponding nitropyridines with Zn/NH4Cl/EtOH under ultrasonication is proposed. Ultrasound irradiation increases the yields of these hydroxylamines and facilitates their isolation.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1993, 42 (2), 325.pdf
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3.
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.

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4.
Инвентарный номер: нет.
   
   A 37


   
    Alkyl 3-fluoroalkyl-3-oxopropionates in reactions with azolyldiazonium salts [Electronic resource] / E. V. Shchegol'kov, E. V. Sadchikova, Ya. V. Burgart, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 3. - P612-618
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Alkyl 3-fluoroalkyl-3-oxopropionates react with antipyrinyldiazonium chloride to form 2-antipyrinylhydrazono-3-fluoroalkyl-3-oxopropionates. The use in these reactions of hetaryldiazonium salts, containing NH group in the ? position, leads to alkyl 7-fluoroalkyl-7-hydroxy-4,7- dihydroazolo[5,1-c]triazine-6-carboxylates. 3-Amino-1H-1,2,4-triazole, 3-amino-4-ethoxycar- bonyl-1H-pyrazole, and 5-amino-4-ethoxycarbonyl-1H-imidazole were used as the heterocyclic component

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (3), 612.pdf
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5.
Инвентарный номер: нет.
   
   B 62


   
    Bis(1,1,1,3,5,5,5-heptafluoro-4-iminopent-2-ene-2-aminato)copper(ii) — a new metal-containing matrix in the design of heterospin systems [Electronic resource] / S. V. Fokin, V. Ovcharenko, G. V. Romanenko, E. V. Tretyakov, A. S. Bogomyakov, V. I. Saloutin, T. I. Filyakova, L. V. Saloutina, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 816-823. - Bibliogr. : p. 823 (11 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
COPPER(II) -- BISCHELATES -- NITROXIDES
Аннотация: The first heterospin compounds based on bis(1,1,1,3,5,5,5 heptafluoro 4 iminopent 2 ene 2 aminato)copper(II) (CuL2) and nitronyl nitroxide radicals, 2 R 4,4,5,5 tetramethyl 4,5 dihydro 1H imidazole 3 oxide 1 oxyls (NIT R, where R = H, Me, Ph, and 1 methyl pyrazol 4 yl), were synthesized and structurally characterized. An important peculiarity of the structure of synthesized solid phases is the formation of a supramolecular structure due to hydrogen bonds between the oxygen atoms of the nitronyl nitroxide fragments of NIT R and the hydrogen atoms of the NH groups of CuL2

\\\\expert2\\NBO\\Russian Chemical Bulletin\\2011, 60 (5), 816-823.pdf
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6.
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).

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7.
Инвентарный номер: нет.
   


   
    Chitosan cross-linking with acetaldehyde acetals / A. Pestov, Y. Privar, A. Slobodyuk [et al.] // Biomimetics. - 2022. - Vol. 7, № 1. - Ст. 10
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHITOSAN -- ACETALDEHYDE ACETALS -- HYDROGEL
Аннотация: Here we demonstrate the possibility of using acyclic diethylacetal of acetaldehyde (ADA) with low cytotoxicity for the fabrication of hydrogels via Schiff bases formation between chitosan and acetaldehyde generated in situ from acetals in chitosan acetate solution. This approach is more convenient than a direct reaction between chitosan and acetaldehyde due to the better commercial availability and higher boiling point of the acetals. Rheological data confirmed the formation of intermolecular bonds in chitosan solution after the addition of acetaldehyde diethyl acetal at an equimolar NH2: acetal ratio. The chemical structure of the reaction products was determined using elemental analysis and 13C NMR and FT-IR spectroscopy. The formed chitosan-acetylimine underwent further irreversible redox transformations yielding a mechanically stable hydrogel insoluble in a broad pH range. The reported reaction is an example of when an inappropriate selection of acid type for chitosan dissolution prevents hydrogel formation.

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8.
Инвентарный номер: нет.
   
   C 73


   
    Combination of NH2OH•HCl and NaIO4: an effective reagent for molecular iodine-free regioselective 1,2-difunctionalization of olefins and easy access of terminal acetals / N. C. Ghosal, S. Santra, S. K. Kundu, A. Hajra, G. V. Zyryanov, A. Majee // RSC Advances. - 2015. - №5. - С. 56780-56788
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NH2OH -- HCl -- NaIO4

\\\\expert2\\NBO\\RSC Advances\\2015. Vol. 5, P.56780-56788.pdf
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9.
Инвентарный номер: нет.
   
   N 64


    Nikitin, E. D.
    Critical point measurements for n-alkyl benzoates (C8 to C 13) [Text] / E. D. Nikitin, A. P. Popov, Yu. G. Yatluk // Journal of Chemical & Engineering Data. - 2007. - Vol. 52, № 4. - P1336-1339
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and critical pressures of six n-alkyl benzoates C6H5COO(CH2)nH with n = 1 to 6 have been measured. All the substances are thermally unstable at their critical points. The method of pulse-heating of a wire probe placed into the liquid under study has been used. Residence times are from (0.03 to 1) ms, which results in little decomposition of the liquid in the course of measuring. The experimental critical properties of alkylbenzoates have been compared with the values estimated by the group contribution methods of Constantinou and Gani and Marrero and Gani

\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2007, v.52, p.1336.pdf
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10.
Инвентарный номер: нет.
   
   N 64


    Nikitin, E. D.
    Critical pressures and temperatures of n-diaminoalkanes (C2 to C12) [Text] / E. D. Nikitin, A. P. Popov, Yu. G. Yatluk // Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 2. - P609-611
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and pressures of eight n-diaminoalkanes NH 2(CH2)nNH2 with n = 2, 3, 4, 6, 8, 9, 10, and 12 have been measured. The method of pulse heating of a wire probe immersed into the liquid under study has been used. Residence times are from (0.03 to 1) ms. The critical properties of diaminoalkanes have been estimated by the group-contribution methods by Joback and Reid, Constantinou and Gani, and Marrero and Gani. These properties have also been calculated using a method based on the assumption that the functions describing the dependence of the critical properties of homologous series on the number of mers in a molecule should be self-similar and provide the scaling behavior for long-chain molecules. The last method provides the best accuracy in calculating the critical properties of diaminoalkanes. For this method, the average absolute errors are equal to 0.4 % for the critical temperature and about 2 % for the critical pressure. © 2006 American Chemical Society

\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2006, v.51, p.609.pdf
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