S 98 Synthesis of fluorinated furo- and pyrrolo[3,4-b]quinoxaline 4,9-dioxides [Electronic resource] / S. K. Kotovskaya, N. M. Perova, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 1999. - Vol. 9, N 2. - P76-77 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\expert2\\nbo\\Mendeleev Communications\\1999, v.9, N 2. p.76.pdf |
R 59 Ring-chain transformations of dihydroisoxazolo[4,5-b]quinoxaline [Electronic resource] / A. M. Boguslavskii, M. G. Ponizovskii, M. I. Kodess, V. N. Charushin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2005. - Vol. 41, № 9. - P1377-1380. - Библиогр. : с. 1380 (18 назв.) 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 |
F 98 Fused polycyclic nitrogen-containing heterocycles. 11. 4-Hydroxy-3,5-diphenyl-2-phenyliminothiazolidines as new key compounds in the synthesis of thiazolo[3,4-a]quinoxaline derivatives [Electronic resource] / V. A. Mamedov, I. Z. Nurkhametova, S. K. Kotovskaya, Ya. A. Levin, A. T. Gubaidullin, I. A. Litvinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 11. - P2568-2576 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A procedure was developed for the synthesis of thiazolo[3,4-a]quinoxaline derivatives based on a new strategy for construction of the pyrazine ring. The key step of the process involves the reaction of 4-hydroxy-3,5-diphenyl-2-phenyliminothiazolidines with o-phenylenediamines \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (11), 2568.pdf |
N 52 New method for the annelation of the pyridine fragment to azines [Electronic resource] / V. N. Charushin, A. M. Boguslavskii, M. G. Ponizovskii, M. I. Kodess, A. N. Chekhlov, Sh. G. Mkoyan, S. M. Aldoshin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 6. - P1267-1271 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The reaction of quinoxaline-2-carbaldehyde with ethyl (E)-3-aminocrotonate afforded ethyl 4-oxo-1,4-dihydropyrido[2,3-b]quinoxaline-3-carboxylate, which is a structural analog of nalidixic and 4-quinolone-3-carboxylic acids representing the basis of the known antibacterial drugs of the fluoroquinolone series \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (6), 1267.pdf |
S 98 Synthesis of fused quinoxalines [Electronic resource] / M. G. Ponizovskii, A. M. Boguslavskii, M. I. Kodess, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 2002. - Vol. 12, № 2. - P68-70 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The intramolecular cyclization of NH and N-alkyl quaternary salts of 2-quinoxaline-2-carboxaldehyde hydrazones affords pyrazolo- [3,4-b]quinoxalines in good yields \\\\expert2\\nbo\\Mendeleev Communications\\2002, v.12, N 2. p.68.pdf |
A 62 Anti-HIV activity of complex isoborneol ethers [Электронный ресурс] / A. G. Pokrovskii, O. I. Kiselev, O. N. Chupakhin, V. N. Charushin, M. G. Ponizovskii // Doklady Akademii Nauk . - 1992. - Vol.326, №2. - P376-379 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ANTIVIRUS AGENT -- ENCYCLAN -- QUINOXALINE DERIVATIVE |
F 70 Fluorine containing quinoline and quinoxaline styryl derivatives: [Electronic resource] / E. V. Nosova, T. V. Trashakhova, V. S. Ustyugov, N. N. Mochul`skaya, M. S. Valova, G. N. Lipunova, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 942-947. - Bibliogr. : p. 946-947 (25 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 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 |
L 79 Lipunova, G. N. Structural, Optical Properties, and Biological Activity of Complexes Based on Derivatives of Quinoline, Quinoxaline, and Quinazoline with Metal Centers from Across the Periodic Table [Electronic resource] / G. N. Lipunova, E. V. Nosova, V. N. Charushin // Comments on Inorganic Chemistry. - 2014. - Vol.34, № 5-6. - С. 142-177. - Bibliogr. : p. 173-177 (88 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): OPTICAL PROPERTIES -- BIOLOGICAL ACTIVITY -- QUINOLINE \\\\expert2\\nbo\\Comments on Inorganic Chemistry\\2014. v. 34, N 5-6. P. 142-177.pdf |
C 98 Cyclization of N-alkylazinium cations with bisnucleophiles. 6. Cycloelimination of tetrahydro-endo-furo[2,3-b]quinoxalines leading to 2,3-disubstituted tetrahydroquinoxalines [Electronic resource] / M. G. Ponizovskii, O. N. Chupakhin, V. N. Charushin, G. G. Aleksandrov // Chemistry of Heterocyclic Compounds. - 1982. - Vol. 18, № 10. - P1098-1103. - Bibliogr. : p. 1103 (10 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): N-METHYLQUINOXALINIUM SALT -- β-DIKETONE -- TETRAHYDROQUINOXALINE Аннотация: The reaction of an N-methylquinoxalinium salt with a β-diketone under thermodynamic-control conditions leads to 2,3-disubstituted tetrahydroquinoxaline via cycloelimination of the initially formed tetrahydro-endo-furo[2,3-b]quinoxaline \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1982, v.18, N 10, p.1098.pdf |
D 62 Direct annelation of six-membered heterocycles with a quinoxaline ring [Electronic resource] / O. N. Chupakhin, V. N. Charushin, M. G. Ponizovskii, L. M. Naumova // Chemistry of Heterocyclic Compounds. - 1984. - Vol. 20, № 5. - P575-576. - Bibliogr. : p. 576 (2 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): QUINOXALINES -- HETEROCYCLES \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1984, v.20, N 5, p. 575.pdf |
D 62 Direct fusion of a triazine to a pyrazine ring. Synthesis of derivatives of [1,2,4]triazino[5,6-b]quinoxaline [Electronic resource] / V. N. Charushin, V. G. Baklykov, O. N. Chupakhin, L. M. Naumova // Chemistry of Heterocyclic Compounds. - 1984. - Vol. 20, № 9. - P1057-1058. - Bibliogr. : p. 1058 (2 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): TRIAZINES -- PYRAZINES \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1984, v.20, N 9, p. 1057.pdf |
C 98 Cyclization of N-alkylazinium cations with bifunctional nucleophiles. 15. Isomerization of thiazolo[4,5-b]quinoxalines in the presence of acids [Electronic resource] / V. N. Charushin, V. G. Baklykov, O. N. Chupakhin, V. N. Drozd // Chemistry of Heterocyclic Compounds. - 1985. - Vol. 21, № 3. - С. 331-338. - Bibliogr. : p. 337-338 (21 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ISOMERIZATION -- CHLOROFORM -- QUINOXALINIUM CATION Аннотация: 4-Alkyl-2-phenyl-3a,4,9,9a-tetrahydrothiazolo[4,5-b]quinoxalines undergo isomerization in chloroform in the presence of acids to the regioisomeric (with respect to them) 9-alkyl-substituted derivatives. Under the same conditions 2,4-dimethyl-3a,4-9,9a-tetrahydrothiazolo [4,5-b]quinoxaline undergoes isomerization to 4-methyl-1H-2,3,3a,4,9,9a-hexahydropyrrolo[2,3-b]quinoxaline-2-thione. It was demonstrated by means of deuterium labels that in both cases the isomerization proceeds through a step involving dissociation to a quinoxalinium cation and the corresponding thioamide \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1985, v.21, N 3, p. 331.pdf |
C 98 Cyclization of N-alkylazinium cations with bifunctional nucleophiles. 16. σ-adducts of quinoxalinium salts with amines, alcohols, and enolates and their role in cyclizations with β-dicarbonyl compounds [Electronic resource] / V. N. Charushin, M. G. Ponizovskii, O. N. Chupakhin, E. O. Sidorov, I. M. Sosonkin // Chemistry of Heterocyclic Compounds. - 1985. - Vol. 21, № 5. - С. 564-572. - Bibliogr. : p. 571-572 (16 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ACETYLACETONE -- 1H NMR SPECTROSCOPY -- N-METHYLQUINOXALINIUM CATION Аннотация: In the reaction of N-methylquinoxalinium iodide with acetylacetone at −30 °C, the formation of 3-acetyl-2,4-dimethyl-3a,4,9,9a-tetrahydrofuro[2,3-b]quinoxaline has been recorded by 1H NMR spectroscopy, this being a regioisomer of the 3-acetyl-2,9-dimethyl-3a,4,9,9a-tetrahydro[2,3-b]quinoxaline formed in this reaction at temperatures above −10 °C. σ-Adducts of the N-methylquinoxalinium cation with alcohols, amines, and β-diketones have also been identified, and their role in cyclizations leading to the annelation of a furan ring is discussed. \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1985, v.21, N 5, p. 564.pdf |
C 98 Cyclizations of N-alkylazinium cations with bifunctional nucleophiles. 18. Synthesis and structure of heterocyclic systems based on quinoxaline / V. N. Charushin, M. G. Ponizovskii, O. N. Chupakhin, A. I. Chernyshev, N. A. Klyuev, T. I. Malinovskii, V. Kh. Kravtsov, V. N. Biyushkin // Chemistry of Heterocyclic Compounds. - 1985. - Vol. 21, № 8. - С. 933-941. - Bibliogr. : p. 941 (15 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): N-METHYLQUINOXALINIUM IODIDE -- ETHYLENEDIAMINE -- O-AMINOPHENOL Аннотация: N-Methylquinoxalinium iodide reacts with ethylenediamine, o-phenylenediamine, and o-aminophenol to give cyclization products of the type involving [2,3-b] annelation of the six-membered heteroring. Two molecules of the quinoxaline participate in the cyclization with 2-aminoethanol to give a complex polycyclic compound. \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1985, v.21, N 8, p. 933.pdf |
C 98 Cyclizations of N-alkylazinium cations with bifunctional nucleophiles. 19. Crystal structure of the kinetic product of the reaction of N-methylquinoxalinium iodide with thioacetamide [Electronic resource] / D. S. Yufit, Yu. T. Struchkov, V. N. Drozd, V. G. Baklykov, V. N. Charushin, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 1985. - Vol. 21, № 10. - С. 1168-1171. - Bibliogr. : p. 1170-1171 (13 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): HETERORINGS -- N-METHYLQUINOXALINIUM IODIDE Аннотация: The mutual orientation of the heterorings and the three-dimensional structure of the kinetic product of the reaction of N-methylquinoxalinium iodide with thioacetamide were established by x-ray diffraction analysis of 2,4-dimethyl-9-acetyl-3a,4,9,9a-tetrahydrothiazolo [4,5-b]quinoxaline. \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1985, v.21, N 10, p. 1168.pdf |
C 98 Cyclization of N-alkylazinium cations with bifunctional nucleophiles. 22. Crystal and molecular structure of tetrahydroquinoxaline condensed with the six-membered 1,3,4-thiadiazine ring [Electronic resource] / D. S. Yufit, Yu. T. Struchkov, V. N. Drozd, V. N. Charushin, V. G. Baklykov, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 1987. - Vol. 23, № 5. - С. 583-587. - Bibliogr. : p. 587 (19 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): X-RAY DIFFRACTION -- HYDROGENS -- TETRAHYDROPYRAZINE Аннотация: X-ray diffraction examination of 4-acetyl-10-methyl-2-phenyl-1,4,4a,5,10,10a-hexahydro-1,3,4-thiadiazino[5,6-b]quinoxaline has shown that the 4a-H and 10a-H hydrogens attached to the carbon atoms common to both heterocycles are cis-oriented, as in the annelation of five-membered heterocycles to the tetrahydropyrazine ring, but in this case the torsion angle H(4a)C(4a)C(10a)H(10a) is much greater, having a value of 60‡ \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1987, v.23, N 5, p. 583.pdf |
A 62 Antifungal activity of thiazolo[4,5-b]quinoxaline-2-thiones [Electronic resource] / G. M. Petrova, V. N. Charushin, N. G. Shcherbakova, M. S. Golod, O. N. Chupakhin // Pharmaceutical Chemistry Journal. - 1987. - Vol. 21, № 7. - С. 518-520. - Bibliogr. : p. 520 (6 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ANTIFUNGAL ACTIVITY -- THIONES \\\\expert2\\nbo\\Pharmaceutical Chemistry Journal\\1987, 21 (7), 518-520.pdf |
N 30 Naumova, L. M. Cyclization of N-alkylazinium cations with bifunctional nucleophiles. 24. Synthesis of condensed 1,2,4-triazino- and 1,2,4-oxadiazino[5,6-b]quinoxaline systems [Electronic resource] / L. M. Naumova, V. N. Charushin, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 1987. - Vol. 23, № 8. - С. 895-899. - Bibliogr. : p. 898-899 (19 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CYCLIZATION -- QUINOXALINUM SALTS -- AMIDHYDRAZONES Аннотация: Cyclization of quinoxalinium salts with amidoximes and amidhydrazones yields partially hydrogenated derivatives of new 1,2,4-oxadiazino- and 1,2,4-triazino[5,6-b]quinoxaline heterocyclic systems. \\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1987, v.23, N 8, p. 895.pdf |
R 35 Regioselective C2-and C8-Acylation of 5,11-Dihydroindolo[3,2-b]carbazoles and the Synthesis of Their 2,8-Bis(quinoxalinyl) Derivatives [Electronic resource] / R. A. Irgashev, N. A. Kazin, G. A. Kim, G. L. Rusinov, V. N. Charushin // Synthesis-Stuttgart. - 2015. - Vol. 47, № 22. - С. 3561-3572. - Bibliogr. : p. 3572 (11 ref) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 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. |
D 62 Direct nuclophilic C-H functionalization of azines and their N-oxides by lithium derivatives of aldonitrones [Electronic resource] / M. V. Varaksin, I. A. Utepova, O. N. Chupakhin, V. N. Charushin // Tetrahedron. - 2015. - Vol. 71, №38. - С. 7077-7082. - Bibliogr. : p. 7082 (23 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 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 |