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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadykhov G., Belyaev D. V., Pervova M. G., Rusinov G. L., Verbitskiy E. V., Chupakhin O. N., Charushin V. N., Vakhrusheva D. V., Eremeeva N. I., Khramtsova E. E.
Заглавие : New approach to biologically active indolo[2,3-b]quinoxaline derivatives through intramolecular oxidative cyclodehydrogenation
Место публикации : ChemistrySelect. - 2022. - Vol. 7, № 18. - С. e202200497
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient synthetic protocol to antiviral agent B-220 and a series of similar indolo[2,3-b]quinoxaline derivatives has been developed. This synthetic approach is based on Buchwald-Hartwig cross-coupling and subsequent annulation by intramolecular oxidative cyclodehydrogenation. For the first time, 6H-indolo[2,3-b]quinoxaline amine derivatives were evaluated for antimycobacterial activity. The moderate bacteriostatic effect against Mycobacterium tuberculosis H37Rv was found. A plausible mechanism of antibacterial action was elucidated by the molecular docking.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Verbitskiy E. V., Kvashnin Y. A., Rusinov G. L., Charushin V. N., Le Poul P., Achelle S., Bures F., Barsella A.
Заглавие : Push–pull derivatives based on 2,4'-biphenylene linker with quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine electron withdrawing parts
Место публикации : Molecules. - 2022. - Vol. 27, № 13. - Ст.4250
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of novel V-shaped quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine push–pull derivatives with 2,4′-biphenylene linker were designed and their electrochemical, photophysical and nonlinear optical properties were investigated. [1,2,5]Oxadiazolo[3,4-b]pyrazine is the stronger electron-withdrawing fragment as shown by electrochemical, and photophysical data. All compounds are emissive in a solid-state (from the cyan to red region of the spectrum) and quinoxaline derivatives are emissions in DCM solution. It has been found that quinoxaline derivatives demonstrate important solvatochromism and extra-large Stokes shifts, characteristic of twisted intramolecular charge transfer excited state as well as aggregation induced emission. The experimental conclusions have been justified by theoretical (TD-)DFT calculations.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mochulskaya N. N., Nosova E. V., Charushin V. N.
Заглавие : Antiviral agents – benzazine derivatives
Место публикации : Chemistry of heterocyclic compounds. - 2021. - Vol. 57. - С. 374–382
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): benzazines--quinazoline--quinoline--quinoxaline
Аннотация: The review outlines the results of studies of the antiviral activity of quinoline, quinoxaline, and quinazoline derivatives published over the past 5 years. The supplied data indicate the enormous potential of benzazines for the design of effective antiviral drugs.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Varaksin M. V., Smyshliaeva L. A., Rusinov V. L., Melekhin V. V., Charushin V. N., Chupakhin O. N., Makeev O. G., Baldanshirieva A. D., Gubina O. G.
Заглавие : Synthesis, characterization, and in vitro assessment of cytotoxicity for novel azaheterocyclic nido-carboranes – Candidates in agents for boron neutron capture therapy (BNCT) of cancer
Место публикации : Tetrahedron. - 2021. - Vol. 102. - С. 132525
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): azaheterocycles--bnct--cytotoxicity--carboranes
Аннотация: A series of novel water-soluble azaheterocyclic derivatives of nido-carborane bearing quinoxaline, 2H-imidazole or 1,2,4-triazine moieties were first synthesized in 82–91% yields. The structures of these boron-enriched compounds were confirmed by the data of NMR, IR spectroscopy, and mass spectrometry. To access the toxicity level for these organoboron compounds, the cytotoxicity indexes (IC50) were determined using by the MTT test on both human glioblastoma cell A-172 (IC50 = 150–243 μM) and human embryonic lung cells (IC50 = 424–944 μM) lines. The obtained preliminary results from in vitro analysis enable the synthesized water-soluble azaheterocyclic carboranes to be considered as challenging candidates in the design of agents for boron-neutron capture therapy (BNCT) of malignant tumors.
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5.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sadykhov G., Verbitskiy E. V., Rusinov G. L., Chupakhin O. N., Charushin V. N.
Заглавие : One-pot two-step synthesis of 4H-thieno[2',3':4,5]pyrrolo[2,3-b]quinoxaline derivatives
Место публикации : Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов" (MOSM 2021): V международная конференция: сборник тезисов. - Екатеринбург, 2021. - С. С. PR-95
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tonkoglazova D. I., Gulevskaya A. V., Askalepova O. I., Chistyakov K. A.
Заглавие : Synthesis, crystal structures and properties of carbazolebased [6]helicenes fused with an azine ring
Место публикации : Beilstein journal of organic chemistry. - 2021. - Vol. 17. - С. 11-21
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): azine-fused helicenes--carbazole-based [6]helicenes--helical structures
Аннотация: Novel carbazole-based [6]helicenes fused with an azine ring (pyridine, pyrazine or quinoxaline) have been prepared through a five-step synthetic sequence in good overall yields. Commercially available 2,3-dihaloazines were used as starting materials. To discern the effect of merging an azine moiety within a helical skeleton, the X-ray structures, UV–vis absorption and fluorescence spectra of the helicenes were investigated and compared to that of the parent carbazole-based [6]helicene (7H-phenanthro[3,4-c]carbazole).
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Verbitskiy E. V., Kvashnin Y. A., Zhilina E. F., Shchepochkin A. V., Rusinov G. L., Chupakhin O. N., Charushin V. N., Baranova A. A., Khokhlov K. O., Chuvashov R. D., Schapov I. E., Yakovleva Y. A., Makarova N. I., Vetrova E. V., Metelitsa A. V.
Заглавие : Synthesis and characterization of linear 1,4-diazine-triphenylamine–based selective chemosensors for recognition of nitroaromatic compounds and aliphatic amines
Место публикации : Dyes and pigments. - 2020. - Vol. 178. - С. 108344
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): aliphatic amines--fluorescence quenching--nitroaromatic compounds--pyrazine--quinoxaline--solvatochromism
Аннотация: Novel 1,4-diazine-based dyes of the D–π–A type, possessing triphenylamine as an electron-donating group, have been developed. Fluorescence studies have demonstrated that emission of these fluorophores is sensitive towards different nitroaromatic compounds and aliphatic amines, both in solutions and in a vapor phase. Moreover, these compounds can be considered as “naked-eye” fluorescent probes for solution polarity because they possess pronounced solvatochromic properties. Therefore, these compounds have to be regarded as potential multifunctional chemosensors for monitoring hazardous organic substances.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moshkina T. N., Nosova E. V., Kopotilova A. E., Lipunova G. N., Sadieva L. K., Kopchuk D. S., Slepukhin P. A., Charushin V. N., Valova M. S., Zalesny R., Osmialowski B.
Заглавие : Synthesis and photophysical studies of novel v-shaped 2,3-bis{5-aryl-2-thienyl}(dibenzo[f,h])quinoxalines
Место публикации : Asian journal of organic chemistry. - 2020. - Vol. 9, № 4. - С. 673-681
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): cross-coupling--dibenzo[f,h]quinoxaline--donor-acceptor-donor chromophores--fluorescence--sensors
Аннотация: A series of novel V-shaped luminophores containing electron-withdrawing dibenzo[f,h]quinoxaline core and arylthienyl donor fragments at positions 2 and 3 has been synthesized. The absorption spectra (UV/vis) were recorded in several solvents, whereas emission spectra were recorded in solutions and powders. The solvatochromism as well as halochromism of obtained compounds was also explored. Electronic-structure calculations using quantum-chemistry methods were performed to further analyse experimental results. All characteristics were compared with that of 2,3-bis(arylthienyl)quinoxaline counterparts. The halochromic effect studies showed that upon gradual addition of trifluoroacetic acid (TFA) to the toluene solution of diethylaminophenyl-substituted dibenzo[f,h]quinoxaline chromophore, absorption and emission changed. Observed band shifts were more distinct in the case of mentioned quinoxaline than for other derivatives. All of the (dibenzo[f,h])quinoxaline chromophores exhibited good sensitivity toward nitro-containing explosives with high Stern-Volmer constants up to 57800 M−1, these results are remarkable for such heterocyclic systems.
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9.

Вид документа : Статья из журнала
Шифр издания : 54/D 62
Автор(ы) : Varaksin M. V., Utepova I. A., Chupakhin O. N., Charushin V. N.
Заглавие : Direct nuclophilic C-H functionalization of azines and their N-oxides by lithium derivatives of aldonitrones [Электронный ресурс]
Место публикации : Tetrahedron. - 2015. - Vol. 71, №38. - С. 7077-7082
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 7082 (23 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): dipole-stabilized carbanions--organic-synthesis--chemical-properties;
Аннотация: Novel ligands of the azine family for complexing with metals have been obtained as a result of the uncatalyzed C-C coupling reactions of quinoline, quinoxaline, 1,10-phenantroline, and their N-oxides with (1-oxido-3-phenyl-1,4-diazaspiro[4.5]deca-1,3-dien-2-yl)lithium
\\\\expert2\\nbo\\Tetrahedron\\2015, v. 71 , p. 7077-7082.pdf
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10.

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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11.

Вид документа : Статья из журнала
Шифр издания : 54/A 10
Автор(ы) : Bazhin D. N., Kudyakova Yu.S., Roeschenthaler G.-V., Burgart Ya. V., Slepukhin P. A., Isenov M. L., Saloutin V. I., Charushin V. N.
Заглавие : A Convenient Approach to CF3-Containing N-Heterocycles Based on 2-Methoxy-2-methyl-5-(trifluoromethyl)furan-3(2H)-one [Электронный ресурс]
Место публикации : European Journal of Organic Chemistry. - 2015. - № 23. - С. 5236-5245
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 5245 (23 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): nitrogen heterocycles --fluorine--oxygen heterocycles
Аннотация: New synthetic routes to trifluoromethylated N-heterocycles based on condensations of 2-methoxy-2-methyl-5-(trifluoromethyl)furan-3(2H)-one with bifunctional N-nucleophiles are described. For the first time, trifluoromethyl-containing pyrazoles, pyrazolines and isoxazolines bearing hydrazone or oxime groups could be obtained by a one-pot strategy based on reactions of 5-(trifluoromethyl)furan-3(2H)-one with two equivalents of the corresponding hydrazines or hydroxylamine in the presence of an acid. The interaction of furan-3(2H)-one with ureas proceeded under mild conditions to furnish 1H-furo[2,3-d]imidazol-2(3H)-one derivatives in good yield. Further, a trifluoromethyl-containing quinoxaline derivative was obtained by condensation of furan-3(2H)-one with ortho-phenylenediamine.
\\\\expert2\\nbo\\European Journal of Organic Chemistry\\2015, №23. p.5236-5245.pdf
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12.

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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13.

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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14.

Вид документа : Статья из журнала
Шифр издания : 54/L 79
Автор(ы) : Lipunova G. N., Nosova E. V., Charushin V. N.
Заглавие : Structural, Optical Properties, and Biological Activity of Complexes Based on Derivatives of Quinoline, Quinoxaline, and Quinazoline with Metal Centers from Across the Periodic Table [Электронный ресурс]
Место публикации : Comments on Inorganic Chemistry. - 2014. - Vol.34, № 5-6. - С. 142-177
Систем. требования: http://www.tandfonline.com/doi/pdf/10.1080/02603594.2014.959116
Примечания : Bibliogr. : p. 173-177 (88 ref.). - 1.07.2015
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): optical properties--biological activity--quinoline
\\\\expert2\\nbo\\Comments on Inorganic Chemistry\\2014. v. 34, N 5-6. P. 142-177.pdf
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15.

Вид документа : Статья из журнала
Шифр издания : 54/F 70
Автор(ы) : Nosova E. V., Trashakhova T. V., Ustyugov V. S., Mochul`skaya N. N., Valova M. S., Lipunova G. N., Charushin V. N.
Заглавие : Fluorine containing quinoline and quinoxaline styryl derivatives:
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2013. - Vol.60, №5. - С. 942-947
Примечания : Bibliogr. : p. 946-947 (25 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): styrylbenzazines--photoluminescence--6,7-difluoroquinaldine
Аннотация: (E)-2-Styryl-substituted 6,7-difluoroquinolines and quinoxalines were synthesized by the condensation of the corresponding 2 methylbenzazines with aromatic aldehydes. Photolumines cence of the synthesized 6,7 difluoro 2 styrylbenzazines was studied
\\\\expert2\\NBO\\Russian Chemical Bulletin\\2011, 60 (5), 942-947.pdf
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16.

Вид документа : Статья из журнала
Шифр издания : 54/N 52
Автор(ы) : Azev Y. A., Kodess M. I., Ezhikova M. A., Gibor A. M., Baranov V. I., Ermakova O. S., Bakulev V. A.
Заглавие : New opportunities for the synthesis of quinoxaline-substituted heterocyclic and aryl moieties [Электронный ресурс]
Место публикации : Pharmaceutical Chemistry Journal. - 2013. - Vol.47, №9. - С. 498-502
Систем. требования: http://download.springer.com/static/pdf/597/art%253A10.1007%252Fs11094-013-0989-z.pdf?auth66=1395993119_3f641570d86d194b43c2c6e0beb1d0e5&ext=.pdf
Примечания : Bibliogr. : p. 502 (10 ref.). - 26.03.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): dimedone--indandione--dmso solution
Аннотация: 6.7-Difluoroquinoxaline (I) reacted with dimedone, indandione, and 3-methyl-1-phenylpyrazol-5-one in DMSO solution in the presence of acid to form mono-substituted products IIa - c. Heating I with resorcinol in EtOH in the presence of acid gave resorcinol derivative IId. 6.7-Difluoroquinoxaline in the presence of base reacted with 3-methyl-1-phenylmethylpyrazol-5-one to form dipyrazolylmethane III and tetrapyrazolylethane derivative IV. Heating products IIa - c with N-methylpiperazine produced 7-methylpiperazine derivatives Va - c of 2-substituted quinoxalines
\\\\expert2\\nbo\\Pharmaceutical Chemistry Journal\\2013, 47 (9), 498.pdf
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17.

Вид документа :
Шифр издания : 54/R 30
Автор(ы) : Azev Y. A., Oparinaa E. D., Kovalev I. S., Slepukhin P. A., Novikova R. K.
Заглавие : Reactions of quinoxaline with 3-methyl-1-phenylpyrazol-5-one
Место публикации : Mendeleev Communications. - 2012. - Vol.22, №1. - С. 37-38
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): quinoxalines --phenylpyrazol--triethylamine
Аннотация: Quinoxaline during the reaction with 3-methyl-1-phenylpyrazol-5-one in the presence of triethylamine at room temperature in dimethylsulfoxide eliminates o-phenylenediamine and gives 4,4’-methylene-bis(3-methyl-1-phenylpyrazol-5-one) and 1,1,2,2-tetrakis(5-methyl-2-oxo-2-phenyl-1,2-dihydro-3H-pyrazol-4-yl)ethane. The latter was proved to be the intermediate to form the above dipyrazolylmethane derivative
\\\\Expert2\\nbo\\Mendeleev Communications\\2012, v.22, p. 37.pdf
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18.

Вид документа : Статья из журнала
Шифр издания : 54/I-69
Автор(ы) : Mashevskaya I. V., Kuslina L. V., Mokrushin I. G., Slepukhin P. A., Maslivets A. N.
Заглавие : Intramolecular triazepine ring closure in the reaction of 3-aroylpyrrolo[1,2-a]quinoxaline-1,2,4-triones with anthranilic acid hydrazide [Electronic resource]
Место публикации : Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2011. - Vol. 47, № 4. - С. 624-626
Систем. требования: http://www.springerlink.com/content/5637kwq730636022/fulltext.pdf
Примечания : Bibliogr. : p. 626 (3 ref.). - 1.11.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2011, 47 (4), 624-626.pdf
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19.

Вид документа : Статья из журнала
Шифр издания : 54/K 79
Автор(ы) : Kovalev I. S., Rusinov V. L., Chupakhin O. N.
Заглавие : Reaction of 2-pyridyllithium with azine N-oxides. Simple and convenient method for the synthesis of 2,2-bipyridine 1-oxide and 2,2:6,2:62-tetrapyridine 1-oxide [Electronic resource]
Место публикации : Chemistry of Heterocyclic Compounds. - 2009. - Vol. 45, № 2. - С. 176-181
Систем. требования: http://www.springerlink.com/content/f4107342125u2346/fulltext.pdf
Примечания : 2.11.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: In the reaction of 2-pyridyllithium with quinoline 1-oxide and isoquinoline 2-oxide a nucleophilic substitution of hydrogen occurs to form the corresponding pyridin-2-ylquinolines. A dimerization of the substrate occurs with pyridine 1-oxide, 2,2-bipyridine 1-oxide or quinoxaline N-oxide. A similar dimerization in good yield occurs when treating azine N-oxides with tert-butyllithium and this serves as a simple and convenient method for preparing bi- and tetrapyridines
\\\\Expert2\\nbo\\Chemistry of Heterocyclic Compounds\\2009, v.45, N 2, p.176.pdf
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20.

Вид документа : Статья из журнала
Шифр издания : 54/R 59
Автор(ы) : Boguslavskii A. M., Ponizovskii M. G., Kodess M. I., Charushin V. N.
Заглавие : Ring-chain transformations of dihydroisoxazolo[4,5-b]quinoxaline [Electronic resource]
Место публикации : Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2005. - Vol. 41, № 9. - С. 1377-1380
Систем. требования: http://www.springerlink.com/content/f71348706054224u/fulltext.pdf
Примечания : Библиогр. : с. 1380 (18 назв.). - 28.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Ring-chain transformation of 3-hydroxyiminomethyl-1-methylquinoxalinium iodide into 9-methyl-9,9a-dihydroisoxazolo[4,5- b]quinoxaline was studied. The isoxazole ring in the latter was cleaved by the action of alcohols.
\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2005, 41 (9), 1377.pdf
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