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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fatykhov R. F., Khalymbadzha I. A., Sharapov A. D., Potapova A. P., Starnovskaya E. S., Kopchuk D. S., Chupakhin O. N.
Заглавие : Expedient synthesis of 1,2,4-triazinyl substituted benzo[c]coumarins via double oxidation strategy
Место публикации : Chimica Techno Acta. - 2023. - Vol. 10, № 2. - С. 202310205
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): coumarin--1,2,4-triazine--nucleophilic substitution of hydrogen
Аннотация: Herein, we report a convenient one-pot synthesis of 1,2,4-triazinyl derivatives of benzocoumarins. The proposed approach consists of the nucleophilic addition of tetrahydrobenzo annulated dimethoxycoumarin to 1,2,4-triazines followed by double oxidation of both dihydrotriazine and tetrahydrobenzo groups with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). The nucleophilic addition of the dimethoxycoumarin to 1,2,4-triazines was carried out in the presence of three-fold excess of methanesulfonic acid in DCM at room temperature. It takes place between positions 8 and 5 of coumarin and 1,2,4-triazine, respectively. The double oxidation step was carried out with 3.6 equivalent of DDQ. Selective oxidation of dihydrotriazine moiety, without affecting the tetrahydrobenzo fragment, was achieved using 1.2 equivalent of tetrachlorobenzoquinone (TCQ). The differences in the oxidation with TCQ and DDQ appear to be related to the higher oxidative potential of DDQ in contrast to TCQ. The advantages of the method are the elimination of the use of transition metals, the availability of starting materials, and the simplicity of the procedure. The proposed approach provides a two-step one-pot protocol for the synthesis of triazinyl benzocoumarins, precursors for the preparation of push-pull pyridinyl chromophore.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boltacheva N. S., Slepukhin P. A., Pervova M. G., Rudina A. Kh., Chemagina I. V., Taibinov N. P., Filyakova V. I., Loboiko B. G., Charushin V. N.
Заглавие : Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 7. - С. 1464-1473
Предметные 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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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Solovyova Y. V., Pestov A. V., Puzyrev I. S., Pervova M. G., Kuznetsov V. A., Vlasov I. A., Artemiev G. A.
Заглавие : Synthesis of δ-Valerolactone Using Stable Hydrogen Peroxide Derivatives
Место публикации : Russian Journal of Organic Chemistry. - 2022. - Vol. 58, № 4. - С. 480-483
Предметные 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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4.

Вид документа :
Шифр издания :
Автор(ы) : Boltacheva N. S., Slepukhin P. A., Pervova M. G., Rudina A. Kh., Chemagina I. V., Taibinov N. P., Filyakova V. I., Loboiko B. G., Charushin V. N.
Заглавие : Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 4. - С. 1464-1473
Предметные 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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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Korotina A. V., Tolshchina S. G., Ishmetova R. I., Rusinov G. L., Chupakhin O. N., Charushin V. N., Evstigneeva N. P., Gerasimova N. A., Zil’berberg N. V., Kungurov N. V.
Заглавие : Synthesis of novel [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines and investigation of their fungistatic activity
Место публикации : Beilstein Journal of Organic Chemistry. - 2022. - Vol. 18. - С. 243-250
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of novel [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines has been synthesized through oxidation reaction of the corresponding 3,6-disubstituted 1,2,4,5-tetrazines bearing amidine fragments. It is shown that the heterocyclic systems obtained can be modified easily at C(3) position in the reactions with aliphatic alcohols and amines. Also, the reactivity of [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines towards CH-active compounds has been studied. The obtained triazolo[1,5-b]annulated 1,2,4,5-tetrazines proved to be active in micromolar concentrations in vitro against filamentous anthropophilic and zooanthropophilic dermatophyte fungi (Trichophyton, Microsporum and Epidermofiton), which cause skin and its appendages (hair, nails) diseases.
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6.

Вид документа : Статья из журнала
Шифр издания : Г/O-97
Автор(ы) : Lyapustin D. N., Ulomsky E. N., Rusinov V. L., Chupakhin O. N., Shchepochkin A. V., Balyakin I. A.
Заглавие : Oxidative aromatization of 4,7-dihydro-6-nitroazolo[1,5-a] pyrimidines: synthetic possibilities and limitations, mechanism of destruction, and the theoretical and experimental substantiation
Место публикации : Molecules. - 2021. - Vol. 26, № 16. - Ст.4719
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): azolo[1,5-a]pyrimidines--nitro-synthons--oxidation--oxidative destruction--synthesis of heterocycles--nitro compounds
Аннотация: The reaction tolerance of the multicomponent process between 3-aminoazoles, 1-morpholino-2-nitroalkenes, and aldehydes was studied. The main patterns of this reaction have been established. Conditions for the oxidation of 4,7-dihydro-6-nitroazolo[1,5-a]pyrimidines were selected. Previous claims that the 4,7-dihydro-6-nitroazolo[1,5-a]pyrimidines could not be aromatised have now been refuted. Compounds with an electron-donor substituent at position seven undergo decomposition during oxidation. The phenomenon was explained based on experimental data, electro-chemical experiment, and quantum-chemical calculation. The mechanism of oxidative degradation has been proposed.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Utepova I. A., Chupakhin O. N., Trestsova M. A., Musikhina A. A, Shchepochkin A. V., Zabelina O. N.
Заглавие : Oxidizing agents in metal-catalyzed and metal-free C-H functionalization of heteroarenes
Место публикации : Arkivoc. - 2021. - № 9. - С. 240-299
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): direct с-h functionalization--heteroarene--oxidizing agents
Аннотация: Oxidative C-H functionalization represents a crucial method to make new C-C, C-X (X = heteroatom) bonds. An optimal selection of the oxidizing agent goes hand in hand with the insight into the reaction mechanism. This review covers recent advances in methods of direct oxidative C-H functionalization of azines and their derivatives with heteroaromatic nucleophiles. Also we review the data on application of inorganic and organic oxidants for implementation of these reactions. C-H functionalizations under electrochemical and photocatalytic oxidation conditions are included as well.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shchepochkin A. V., Antipin F. V., Charushin V. N., Chupakhin O. N.
Заглавие : Oxidative C–H functionalization of arenes: main tool of 21st century green chemistry. A review
Место публикации : Doklady Chemistry. - 2021. - Vol. 499, № 1. - С. 123-157
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Recent advances in the field of direct oxidative C–H functionalization of inactivated arenes, as one of the main tools of green chemistry, are discussed. Examples of building carbon–carbon, carbon–oxygen, carbon–nitrogen, and carbon–sulfur bonds, using catalysis with palladium compounds, oxidation with hypervalent iodine derivatives, and through electrochemical and photochemical transformations, are given.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chupakhin O. N., Shchepochkin A. V., Charushin V. N.
Заглавие : Application of electrochemical oxidative methods in the C(SP2)–H functionalization of heterocyclic compounds
Место публикации : Advances in heterocyclic chemistry. - 2020. - Т. 131. - С. 1-47
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): c-h functionalization--electrochemical oxidation--green chemistry--ocdc--sn h reactions
Аннотация: New atom-economic and environmentally friendly processes should replace the traditional ways of building C–C, C–N, C–O, C–P, C–S bonds, which are usually based on the replacement of a halogen atom, and, therefore, required the preliminary modification of substrates, and the use of aggressive reagents, harsh conditions or expensive catalysts. In recent years, the direct metal-free functionalization of the C(sp2)–H bond, which provides the most efficient and low-waste pathway for molecular transformation, has attracted increasing attention. However, these transformations usually require stoichiometric amounts of chemical oxidizing agents. The modern world and its sustainable development trends are forcing the chemical industry to improve in an environmentally friendly direction and meet the requirements of “green chemistry.” In this regard, the use of electrochemical methods is extremely important. Electrochemical anodic oxidation is an ideal option for the replacement of chemical oxidizers in C–H functionalization reactions. The data on the main electrochemical methods and approaches used for the direct functionalization of the C(sp2)–H bond in heterocyclic compounds are classified and summarized in this paper.
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10.

Вид документа : Статья из журнала
Шифр издания : Г2/F 76
Автор(ы) : Ul'yanova M. I., Pervova M. G., Slepukhin P. A., Pestov A. V., Aksenova T. V.
Заглавие : Formation of a cluster h2v10o 28 4– under the action oF Bronsted acids and its catalytic activity in oxidation of alkylbenzenes
Место публикации : Russian Journal of Organic Chemistry. - 2018. - Vol. 54, № 5. - С. 687-690
ББК : Г2
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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11.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Lipunova G. N., Nosova E. V., Charushin V. N., Chupakhin O. N.
Заглавие : Synthesis and antitumour activity of 4-aminoquinazoline derivatives [Электронный ресурс]
Место публикации : Russian Chemical Reviews. - 2016. - Vol. 85, № 7. - С. 759-793
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 31.10.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): growth-factor receptor --potent egfr inhibitors--tyrosine kinase inhibitors
Аннотация: Scieces of data on the synthesis and antitumour activity of 4-aminoquinazolines are summarized and analyzed. Key methods for the synthesis of these compounds are considered, primarily cyclocondensation of carboxylic acid derivatives, as well as the oxidation of quinazolines and the cyclization of disubstituted thioureas. Improvements of synthetic schemes for erlotinib, gefitinib and lapatinib, which are the best-known pharmaceuticals based on compounds of the title class, are also considered. Synthetic strategies and biological activities for new 4-aminoquinazoline derivatives that are EGFR-tyrosine kinase inhibitors, multiactive compounds, and labelled compounds for use as positron emission tomography (PET) imaging agents are discussed.
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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
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13.

Вид документа : Статья из журнала
Шифр издания : 54/R 30
Автор(ы) : Frolova L. L., Popov A. V., Bezuglaya L. V., Alekseev I.N., Slepukhin P. A., Kutchin A.V.
Заглавие : Reactions of Terpene Alcohols and Diols with Chlorine Dioxide in Dimethylformamide [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2016. - Vol. 86, № 3. - С. 613-621
Систем. требования: http://download.springer.com/static/pdf/701/
Примечания : 03.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): one-pot synthesis --oxidation--ketones
Аннотация: The system chlorine dioxide-dimethylformamide in combination with or without a catalytic amount of MoCl5, CeCl3, ZrOCl2, or VO(acac)(2) induces oxidative chlorination of a number of bicyclic terpene alcohols and vicinal diols. 2 alpha-Chloropinan-3-one, 3 alpha-chloro-10 beta-pinan-4-one, 5 alpha-chloro-3 alpha-hydroxycaran-4-one, 5 beta-chloro-3 beta-hydroxycaran-4-one, and 4 alpha-chloro-2 alpha-hydroxypinan-3-one were thus synthesized in good preparative yields.
\\\\expert2\\NBO\\Russian Journal of General Chemistry\\2016, V. 86, N 3, p. 613-621.pdf
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14.

Вид документа : Статья из журнала
Шифр издания : 54/R 35
Автор(ы) : Irgashev R. A., Kazin N. A., Kim G. A., Rusinov G. L., Charushin V. N.
Заглавие : Regioselective C2-and C8-Acylation of 5,11-Dihydroindolo[3,2-b]carbazoles and the Synthesis of Their 2,8-Bis(quinoxalinyl) Derivatives [Электронный ресурс]
Место публикации : Synthesis-Stuttgart. - 2015. - Vol. 47, № 22. - С. 3561-3572
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 3572 (11 ref). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 5,11-dihydroindolo[3,2-b]carbazoles --2-arylgly-oxals--acylation
Аннотация: An efficient approach for the double acetylation of 5,11-dihexyl- 6,12-di(hetero) aryl-substituted 5,11-dihydroindolo[3,2-b] carbazoles with acetic anhydride in the presence of boron trifluoride etherate has been developed, thus affording the corresponding 2,8-diacetyl derivatives in good yields. A similar acylation has been shown to occur by the reaction of anhydrides of other carboxylic acids. Oxidation of the obtained 2,8-diacetyl derivatives with selenium dioxide takes place on heating or under microwave irradiation, thus resulting in the formation of the corresponding 2,8-diglyoxals. The latter proved to react with aromatic o-diamines to afford new indolo[3,2-b] carbazoles bearing quinoxalinyl fragments at C-2 and C-8. Major optical properties of quinoxaline- containing indolo[3,2-b] carbazoles have been measured.
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15.

Вид документа : Статья из журнала
Шифр издания : 54/R 35
Автор(ы) : Irgashev R. A., Kazin N. A., Kim G. A., Rusinov G. L., Charushin V. N.
Заглавие : Regioselective C2- and C8-Acylation of 5,11-Dihydroindolo[3,2-b]carbazoles and the Synthesis of Their 2,8-Bis(quinoxalinyl) Derivatives
Место публикации : Synthesis (Germany). - 2015. - Vol. 47, № 22. - С. 3561-3572
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 5,11-dihydroindolo[3,2-b]carbazoles--acylation-- 2-arylglyoxals
Аннотация: An efficient approach for the double acetylation of 5,11-dihexyl-6,12-di(hetero)aryl-substituted 5,11-dihydroindolo[3,2-b]carbazoles with acetic anhydride in the presence of boron trifluoride etherate has been developed, thus affording the corresponding 2,8-diacetyl derivatives in good yields. A similar acylation has been shown to occur by the reaction of anhydrides of other carboxylic acids. Oxidation of the obtained 2,8-diacetyl derivatives with selenium dioxide takes place on heating or under microwave irradiation, thus resulting in the formation of the corresponding 2,8-diglyoxals. The latter proved to react with aromatic o-diamines to afford new indolo[3,2-b]carbazoles bearing quinoxalinyl fragments at C-2 and C-8. Major optical properties of quinoxaline-containing indolo[3,2-b]carbazoles have been measured.
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16.

Вид документа : Статья из журнала
Шифр издания : 54/R 35
Автор(ы) : Irgashev R. A., Kazin N. A., Kim G. A., Rusinov G. L., Charushin V. N.
Заглавие : Regioselective C2- and C8-Acylation of 5,11-Dihydroindolo[3,2-b]carbazoles and the Synthesis of Their 2,8-Bis(quinoxalinyl) Derivatives [Электронный ресурс]
Место публикации : Synthesis (Germany). - 2015. - Vol.47, № 22. - С. 3561-3572
Систем. требования: https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0035-1560183
Примечания : Bibliogr. : p. . - 29.03.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): acylation--type heteroacenes--quinoxalines
Аннотация: An efficient approach for the double acetylation of 5,11-dihexyl-6,12-di(hetero)aryl-substituted 5,11-dihydroindolo[3,2-b]carbazoles with acetic anhydride in the presence of boron trifluoride etherate has been developed, thus affording the corresponding 2,8-diacetyl derivatives in good yields. A similar acylation has been shown to occur by the reaction of anhydrides of other carboxylic acids. Oxidation of the obtained 2,8-diacetyl derivatives with selenium dioxide takes place on heating or under microwave irradiation, thus resulting in the formation of the corresponding 2,8-diglyoxals. The latter proved to react with aromatic o-diamines to afford new indolo[3,2-b]carbazoles bearing quinoxalinyl fragments at C-2 and C-8. Major optical properties of quinoxaline-containing indolo[3,2-b]carbazoles have been measured.
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17.

Вид документа : Статья из журнала
Шифр издания : 54/C 76
Автор(ы) : Nawrozkij M. B., Gorbunov E. B., Rusinov V. L., Charushin V. N.
Заглавие : Convenient synthesis of building-blocks for pyridine/piperidine-decorated crown ethers [Электронный ресурс]
Место публикации : Macroheterocycles . - 2014. - Vol.7, №1. - С. 18-22
Систем. требования: http://www.scopus.com/record/display.url?eid=2-s2.0-84901807451&origin=resultslist&sort=plf-f&src=s&st1=Charushin&st2=&nlo=1&nlr=20&nls=count-f&sid=6770215A4AC178071D5EE516B2A45BB7.53bsOu7mi7A1NSY7fPJf1g%3a1793&sot=anl&sdt=aut&sl=40&s=AU-ID%28%22Charushin%2c+Valery+N.%22+7006350819%29&relpos=10&relpos=10&citeCnt=0&searchTerm=AU-ID%28%5C%26quot%3BCharushin%2C+Valery+N.%5C%26quot%3B+7006350819%29
Примечания : Bibliogr. : p. 22 (19 ref.). - 12.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2-vynylpyridine --epoxidation --hydroxylation
Аннотация: A convenient way to 1-(pyridin-2-yl)ethan-1,2-diol, 2-(oxiran-2-yl)pyridine and two diastereomeric forms of 1-(piperidin- 2-yl)ethan-1,2-diol, valuable building-blocks for the synthesis of functionalized crown ethers, has been developed. It is based on the Wagner oxidation or NBS-mediated epoxydation of 2-vinylpyridine, and the Schwenk-Papa reduction of 1-(pyridin-2-yl)ethan-1,2-diol, accompanied by fractional crystallization of a diastereo-meric mixture of the target product
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18.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Irgashev R. A., Karmatsky A. A., Rusinov G. L., Charushin V. N.
Заглавие : Synthesis of 4-(thien-2-yl)-substituted coumarins through Lewis acid catalyzed Michael addition of thiophenes to 3-benzoylcoumarins followed by oxidation [Электронный ресурс]
Место публикации : Tetrahedron Letters. - 2014. - Vol.55, №26. - С. 3603-3606
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0040403914007497
Примечания : 08.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): thiophenes--3-benzoylcoumarins--lewis acid
Аннотация: 3-Benzoyl-4-(thien-2-yl)coumarins have been obtained in good yields according to the SNH addition–oxidation protocol, involving the diastereoselective addition of thiophenes at C-4 of 3-benzoylcoumarins under BBr3 catalysis, followed by oxidation of the intermediate 3,4-trans-3-benzoyl-4-(thien-2-yl)-3,4-dihydrocoumarins with DDQ. This two-step procedure can be regarded as nucleophilic substitution of hydrogen (SNH) on the heterocyclic ring of coumarins
\\\\expert2\\nbo\\Tetrahedron Letters\\2014, v. 55, p. 3603.pdf
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19.

Вид документа : Статья из журнала
Шифр издания : 54/N 91
Автор(ы) : Kovalev I. S., Kopchuk D. S., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Nucleophilic dimerization of indoline under oxidative conditions [Электронный ресурс]
Место публикации : Mendeleev Communications. - 2014. - Vol.24, №1. - С. 40-41
Систем. требования: http://ac.els-cdn.com/S0959943613002162/1-s2.0-S0959943613002162-main.pdf?_tid=46e7281e-b32f-11e3-96de-00000aacb35d&acdnat=1395650318_77c7cdb9fc7ba7e4d5b7a8e1ef108ee7
Примечания : Bibliogr. : p. 41 (10 ref.). - 24.03.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): indoline--hydrogen peroxide --methanol
Аннотация: Oxidation of indoline with 30% hydrogen peroxide in methanol in the presence of sodium tungstate affords the dimeric 3-oxo-1’H,3H- 2,3’-biindole-1-oxide.
\\\\expert2\\nbo\\Mendeleev Communications\\2014, v.24 (1), p. 40.pdf
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20.

Вид документа : Статья из журнала
Шифр издания : 54/O-97
Автор(ы) : Frolova L. L., Popov A. V., Bezuglaya L. V., Slepukhin P. A., Kuchin A. V.
Заглавие : Oxidation of terpenoid diols with chlorine dioxide. Easy preparation of α-hydroxyketones [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2014. - Vol.84, №5. - С. 853-859
Систем. требования: http://download.springer.com/static/pdf/247/art%253A10.1134%252FS1070363214050120.pdf?auth66=1408162021_62143127c58f3ed789851c5d51b6dc1a&ext=.pdf
Примечания : Bibliogr. : p. 859 (16 ref.). - 14.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chlorine dioxide --oxidation--selectivity
Аннотация: Oxidative dehydrogenation of vicinal diols of bornane and pinane type with chlorine dioxide in dimethylformamide has yielded α-hydroxyketones with high selectivity. 3α-Hydroxy-10β-pinane-4-one has been prepared for the first time with yield of 63-65%; the product structure has been confirmed by X-ray diffraction studies
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2014, V. 84, N 5, p. 853–859.pdf
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