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 Найдено в других БД:Публикации Чарушина В.Н. (45)
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1.
Инвентарный номер: нет.
   


   
    Methodology of C(sp2)-H functionalization in mono- and diazine N-oxides in the synthesis of heterocyclic meso-substituted calixarenes [Electronic resource] / M. V. Varaksin, O. N. Chupakhin, V. N. Charushin, K. A. Khlamkin, I. A. Utepova // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - Vol. 6, № 5. - С. 1093-1096
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
MESO-SUBSTITUTED CALIXARENES -- MESO-SUBSTITUTED AZINYLCALIXARENES -- METAL CATALYSIS
Аннотация: Earlier unknown meso-​substituted azinylcalixarenes were obtained by a direct cross-​coupling of 2-​lithium-​25,​26,​27,​28-​tetramethoxycalix[4]​arenes with mono- and diazine N-​oxides without transition metal catalysis.

\\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 64 (5), 1093-1096.pdf
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2.
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    1,3,7-triazapyrene-based ortho-carborane fluorophores: convenient synthesis, theoretical studies, and aggregation-induced emission properties / L. A. Smyshliaeva, M. V. Varaksin, E. I. Fomina [et al.] // Organometallics. - 2021. - Vol. 40, № 16. - P2792-2807
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient transition-metal-free approach, based on nucleophilic substitution of hydrogen (SNH), for consecutive regioselective C–H functionalization of 1,3,7-triazapyrene scaffolds with carboranyllithium and phenyllithium is reported. The theoretical calculations disclosed highlight key features in the regioselectivity and mechanism of the investigated SNH transformations. The novel 1,3,7-triazapyrene-based ortho-carboranes obtained have large potential in the field of molecular electronics as organic luminophores, which are characterized by the aggregation-induced emission and dual-emission effects.

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3.
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    A BF3-mediated C–H/C–Li coupling of 1,3,7-triazapyrene with 2-thienyllithium in the design of push–pull fluorophores and chemosensors for nitroaromatics / I. A. Lavrinchenko, T. D. Moseev, M. V. Varaksin [et al.] // New Journal of Chemistry. - 2022. - Vol. 46, № 11. - P5121-5128
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Mono- and bis-2-thienyl-substituted 1,3,7-triazapyrenes have been synthesized for the first time via BF3-mediated C–H/C–Li coupling of 1,3,7-triazapyrene with 2-thienyllithium in 33 and 51% yields, respectively. The photophysical properties of these polycyclic azaaromatics have been studied, with emission in the range of 450–500 nm and fluorescence quantum yields of up to 99% in methanol solutions being revealed. The turn-off chemosensing properties of 2-thienyl-substituted 1,3,7-triazapyrenes for the selective detection of nitroaromatics have also been assessed; in particular, the quenching constants according to the Stern–Volmer model, the quenching sphere radius according to the Perrin model, the detection limit and the quenching efficiency have been determined. In particular, 6,8-bis-(thiopen-2-yl)-1,3,7-triazapyrene, characterized by 10 times the quenching constant and limit of detection (LOD) compared to the mono-substituted analog, can be considered as the most promising chemosensor for determining nitroaromatic compounds. DFT calculations confirm the presence of intramolecular charge transfer (ICT) effects in the case of the obtained fluorophores and clarify the quenching mechanism for nitroaromatics.

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4.
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    An efficient synthesis of push-pull fluorophores based on (2-fluoroaryl)-1,2,3-triazoles / I. A. Lavrinchenko, T. D. Moseev, Y. A. Seleznev [et al.] // Успехи синтеза и комплексообразования = Advances in synthesis and complexing : сборник тезисов шестой Международной научной конференции. - Москва, 2022. - P194
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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5.
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    Aryne-mediated transformations of 5-perfluorophenyl-substituted 3-(pyridin-2-yl)-1,2,4-triazines / T. D. Moseev, M. V. Varaksin, E. A. Nikiforov [et al.] // Actual problems of organic chemistry and biotechnology. - Екатеринбург, 2020. - P274-276
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIDO[1,2-A]INDOLES -- ARYNE -- REARRANGEMENT

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6.
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    Aryne-mediated transformations of 5-perfluorophenyl-substituted 3-(pyridin-2-yl)-1,2,4-triazines in the design of novel 10-(1h-1,2,3-triazol-1-yl)pyrido[1,2-a]indole fluorophores / T. D. Moseev, M. V. Varaksin, I. A. Lavrinchenko [и др.] // Tetrahedron. - 2020. - Vol. 76, № 18. - P131147
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,3-TRIAZOLES -- ARYNE-MEDIATED TRANSFORMATIONS -- CAOSAMBHWGMFEW-UHFFFAOYSA-N -- CYFQLMLVDSTHGC-UHFFFAOYSA-N -- FLUOROARENES
Аннотация: A number of novel fluorinated derivatives of the family of pyrido[1,2-a]indole fluorophores have first been synthesized via the aryne-mediated domino transformations of 5-(perfluorophenyl)-3-(pyridin-2-yl)-1,2,4-triazines. A comprehensive study of photophysical properties of the obtained polyfluoroaryl substituted derivatives, in which polyfluoroaryl, 1,2,3-triazole, and pyridoindole subunits contribute to a joint chromophore system, has shown that these compounds proved to exhibit a fluoresce with green light in acetonitrile solutions.

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7.
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    Azaheterocyclic derivatives of ortho - carborane: synthetic strategies and application opportunities / L. A. Smyshliaeva, M. V. Varaksin, V. N. Charushin, O. N. Chupakhin // Synthesis. - 2020. - Vol. 52, № 3. - P337-352
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZAHETEROCYCLES -- CARBORANES -- CARBORYNE -- CROSS-COUPLING REACTIONS -- DECABORANE
Аннотация: Azaheterocyclic derivatives of 1,2-dicarba- closo -dodeca borane (ortho -carborane) are known to be of particular interest due to numerous plausible applications, particularly, in medicine, materials science, and advanced technologies. Three principal synthetic strategies resulting in azaheterocyclic carboranes, in which boron-enriched and azaheterocyclic fragments are linked to each other, either directly by means of the C-C bonds or through a short spacer (CH 2, CH 2 S, CH 2 O, etc.), have been outlined. These synthetic approaches are of general character and can be used both individually and in combination to afford promising organoboron clusters of diverse architectures. 1 Introduction 2 C-C Cross-Coupling Strategies in the Synthesis of Azahetero cyclic Carboranes 3 Carboryne-Based Transformation Strategies 4 Condensation Strategies: Reactions of Decaborane B 10 H 14 with Substituted Acetylenes 5 Conclusion and Outlook.

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8.
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    Azaheterocyclic derivatives of ortho -carborane: synthetic strategies and application opportunities / L. A. Smyshliaeva, M. V. Varaksin, V. N. Charushin, O. N. Chupakhin // Synthesis. - 2020. - Т. 52, № 3. - P337-352
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CARBORANES -- AZAHETEROCYCLES -- DECABORANE -- CROSS-COUPLING REACTIONS -- CARBORYNE
Аннотация: Azaheterocyclic derivatives of 1,2-dicarba- closo -dodeca borane (ortho -carborane) are known to be of particular interest due to numerous plausible applications, particularly, in medicine, materials science, and advanced technologies. Three principal synthetic strategies resulting in azaheterocyclic carboranes, in which boron-enriched and azaheterocyclic fragments are linked to each other, either directly by means of the C-C bonds or through a short spacer (CH 2, CH 2 S, CH 2 O, etc.), have been outlined. These synthetic approaches are of general character and can be used both individually and in combination to afford promising organoboron clusters of diverse architectures. 1 Introduction 2 C-C Cross-Coupling Strategies in the Synthesis of Azahetero cyclic Carboranes 3 Carboryne-Based Transformation Strategies 4 Condensation Strategies: Reactions of Decaborane B 10 H 14 with Substituted Acetylenes 5 Conclusion and Outlook.

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9.
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.

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10.
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    BF3-mediated C-LI/C-H coupling of 1,3,7-triazapyrene with lithium alkynes -a convenient synthetic strategy towards novel aza-PAHS / I. A. Lavrinchenko, T. D. Moseev, M. V. Varaksin, V. N. Charushin, O. N. Chupakhin // Mendeleev 2021: book of abstracts XII international conference on chemistry for young scientists. - Saint Petersburg, 2021. - С. 585
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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