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Каталог книг и продолжающихся изданий
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Каталог диссертаций и авторефератов диссертаций УрО РАН
Каталог препринтов УрО РАН (1975 г. - )
Имидж-каталог отечественных книг (до 2010 г.)
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Алфавитно-предметный указатель (АПУ) ЦНБ УрО РАН
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Изобретения уральских ученых
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Нанотехнологии
Демидовские премии
Гибель династии Романовых
История Урала
Личная библиотека С. В. Вонсовского
Книжная коллекция Шубиных
Труды Института высокотемпературной электрохимии УрО РАН
Труды Института истории и археологии УрО РАН
Труды сотрудников Института горного дела УрО РАН
Труды сотрудников Института органического синтеза УрО РАН
Труды сотрудников Института теплофизики УрО РАН
Труды сотрудников Института химии твердого тела УрО РАН
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Труды сотрудников ЦНБ УрО РАН
Публикации Черешнева В.А.
Публикации Чарушина В.Н.
Каталог библиотеки ИЭРиЖ УрО РАН
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1.
Инвентарный номер: нет.
   
   Х 76

    Хомутов, О. Г.
    Взаимодействие полифторалкилсодержащих азиридинилкетонов с галогеноводородами [] = Interaction of polyfluoroalkyl-comtaining aziridinyl ketones with hydrogen halides / О. Г. Хомутов, К. И. Пашкевич // Изв. АН. Сер. Химическая. - 1996. - N 3. - С. 684-686 . - ISSN 0002-3353
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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2.
Инвентарный номер: нет.
   
   Z 99

   
    [1,5]Sigmatropic shift of hydrogen in amination of 3-pyrrolidino-1,2,4- triazine 4-oxide [Text] / O. N. Chupakhin, V. N. Kozhevnikov, D. N. Kozhevnikov, V. L. Rusinov // Tetrahedron Letters. - 1999. - Vol. 40, № 33. - P6099-6100. - Bibliogr. : p. 6100 (11 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AMINATION -- DERIVATIVE -- PYRROLIDINE DERIVATIVE -- TRIAZINE DERIVATIVE
Аннотация: The reaction of 3-pyrrolidino-1,2,4-triazine 4-oxide with ammonia leads to the product of tele-substitution of pyrrolidine - 5-amino-1,2,4-triazine 4-oxide. Sigmatropic shift of hydrogen postulated for such reactions has been proved by isolation of key intermediates.

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3.
Инвентарный номер: нет.
   
   M 20

    Makosza, M.
    Vicarious nucleophilic substitution of hydrogen in aldehydes and Knoevenagel reaction of iminium salts with ?-halocarbanions [Electronic resource] / M. Makosza, D. N. Kozhevnikov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2001. - Vol. 50, № 11. - P2236-2238
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Iminium salts derived from aromatic aldehydes react with -chlorocarbanions via two different pathways: reaction with secondary carbanion of halomethyl sulfones proceeds as the Knoevenagel condensation, while tertiary -chlorocarbanions gave products of vicarious nucleophilic substitution of hydrogen in parent aldehydes

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2001, 50 (11), 2236.pdf
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4.
Инвентарный номер: нет.
   
   U 52

   
    Unexpected dimerization of 5,7-dimethyl-2-trifluoromethyl-8-azachromone induced by hydrogen sulfide [Electronic resource] / M. A. Barabanov, V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 11. - P2094-2097. - Bibliogr. : p. 2097 (18 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Depending on the reaction conditions, the reaction of 5,7-dimethyl-2-trifluoromethyl-8-azachromone with hydrogen sulfide afforded cyclic and linear dimers with the S-S bond. The regio- and stereochemistry of the reaction products were determined by 1H and 13C NMR spectroscopy

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (11), 2094-2097.pdf
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5.
Инвентарный номер: нет.
   
   T 82

   
    Transformations of 1,2,4-Triazines in Reactions with Nucleophiles: V. SNH and ipso-Substitution in the Synthesis and Transformations of 5-Cyano-1,2,4-triazines [Electronic resource] / D. N. Kozhevnikov, V. N. Kozhevnikov, I. S. Kovalev, V. L. Rusinov, O. N. Chupakhin, G. G. Aleksandrov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2002. - Vol. 38, № 5. - P744-750
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The scope of functionalization of 1,2,4-triazines can be considerably extended via successive nucleophilic substitution of hydrogen (SN H) and ipso-substitution. A convenient procedure has been developed for direct cyanation of 1,2,4-triazine 4-oxides with acetone cyanohydrin in the presence of triethylamine. The cyano group in the resulting 5-cyano-1,2,4-triazines is readily replaced by reactions with various aliphatic alcohols and amines

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2002, 38 (5), 744.pdf
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6.
Инвентарный номер: нет.
   
   T 82

   
    Transformations of 1,2,4-triazines in reactions with nucleophiles: IV. Nucleophilic substitution of hydrogen in 1,2,4-triazine 4-oxides under acylation conditions [Text] / V. L. Rusinov, D. N. Kozhevnikov, I. S. Kovalev, O. N. Chupakhin, G. G. Aleksandrov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2000. - Vol. 36, № 7. - P1050-1060. - Bibliogr. : p. 1060 (13 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
3-SUBSTITUTED 6-PHENYL-1,2,4-TRIAZINE 4-OXIDES -- AROMATIC NUCLEOPHILES -- AUTOAROMATIZATION -- KINETIC REGIOSELECTIVITY -- THERMODYNAMIC REGIOSELECTIVITY

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7.
Инвентарный номер: нет.
   
   T 44

   
    The synthesis of polyarene-modified 5-phenyl-2,2'-bipyridines via the methodology and aza-Diels-Alder reaction [Electronic resource] / I. S. Kovalev, D. S. Kopchuk, A. F. Khasanov, V. L. Rusinov, O. N. Chupakhin // Mendeleev Communications. - 2014. - Vol.24, №2. - С. 117-118. - Bibliogr. : p. 118 (52 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRIAZINE -- LIGANDS -- ARENES
Аннотация: Nucleophilic substitution of hydrogen () in 6-phenyl-3-(2-pyridyl)-1,2,4- triazine under the action of lithium derivatives of polynuclear arenes followed by aza-Diels-Alder reaction with norbornadiene or morpholinocyclopentene gives the novel polyarenemodified photoluminescent 5-phenyl-2,2'-bipyridine ligands

\\\\expert2\\nbo\\Mendeleev Communications\\2014, v.24, p. 117-118.pdf
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8.
Инвентарный номер: нет.
   
   T 44

   
    The structure of 4-phenyl-2,6-bis(trifluoroacetyl)cyclohexanone and its dilithium salt in the crystal state, solution and gas phase [Electronic resource] / D. V. Sevenard, O. Kazakova, E. Lork, T. Duelcks, D. L. Chizhov, G. -V. Roeschenthaler // Journal of Molecular Structure. - 2007. - Vol. 846, № 1-3. - P87-96
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 4-Phenyl-2,6-bis(trifluoroacetyl)cyclohexanone and its dilithium salt were synthesized starting from the commercially available 4-phenylcyclohexanone. With X-ray structure analysis of these compounds, for the first time the solid state structure determination for a fluorinated 1,3,5-triketone and an alkaline salt of 1,3,5-triketone was achieved. The subsequent multinuclear NMR and MS investigations revealed that in solution and gas phase, analogously to the crystal, both compounds exist predominantly in a highly delocalized double U-enol(ate) form. The carbonyl O…O distances in the dilithium salt were established to be considerably longer than the distances between oxygens of the parent 1,3,5-triketone, bonded by strong (short) resonance assisted hydrogen bonds. Among the 1,3,5-tricarbonyl compounds with known crystal structure, the entitled 1,3,5-triketone shows comparatively weak delocalization over the conjugated bis-enolone backbone.

\\\\Expert2\\nbo\\Journal of Molecular Structure\\2007, v.846, p.87.pdf
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9.
Инвентарный номер: нет.
   
   T 44

   
    The epithermal gold-telluride Kochbulak deposit (Uzbekistan) [Text] / V. A. Kovalenker, Yu. G. Safonov, V. B. Naumov, V. L. Rusinov // Geology of Ore Deposits. - 1997. - Vol. 39, № 2. - P107-128. - Bibliogr. : p. 128 (42 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DEPOSIT -- EPITHERMAL GOLD-TELLURIDE KOCHBULAK DEPOSIT -- KOCHBULAK DEPOSIT -- VOLCANIC SEQUENCE -- PORPHYRY DIKES
Аннотация: The Paleozoic epithermal gold-telluride Kochbulak deposit is situated on the northern slope of the Kurama Range in the central Tien Shan (Uzbekistan). The deposit is located within an andesite-dacite volcanic sequence (C2-3) intruded by subalkaline granodiorite and granosyenite porphyry dikes (C3-P1). The ore-forming system of the deposit originated and evolved during the orogenic uplift associated with aerial volcanism and emplacement of porphyritic granitoids. The Kochbulak deposit contains a great diversity of ore-forming sulfides, sulphosalts, tellurides, and selenides, several of which were first found there. The deposit has features of epithermal mineralization of both the adularia-sericite and acid-sulfate genetic types and mesothermal gold mineralization. The deposit consists of high- and low-angle veins and ore-bearing breccia pipes. The pipe-shaped bodies and veins differ in ore, gangue, and metasomatic mineral assemblages. The ore bodies hosted by explosive-hydrothermal breccias contain goldfieldite, famatinite, luzonite, enargite, diaspore, and pyrophyllite and, therefore, have pronounced features of epithermal mineralization of the acid-sulfate type. The ore veins show evidence of deeper formation and are associated with quartz-carbonate-sericite wall rock alteration. Our study of mineral assemblages, fluid inclusions, sulfur, oxygen, and hydrogen isotopes, and thermodynamic calculations show that the Kochbulak deposit was formed during a cyclic multistage process with periodic alternation of sealing along with tectonic and explosive opening of the fluid channel ways. The ore-forming process is subdivided into the preore, I to III ore, and postore stages related to fracture opening. Three types of solutions took part in the formation of gold-sulfide-sulphosalt-telluride mineralization. They were distinct in temperature, composition, salinity, and proportion of meteoric and magmatic water and other volatile components. The temperature generally decreased from 465°C to <100°C, and slightly increased at the beginning of each stage of the ore-forming process. Pressure, salinity, ion and gas composition of solutions, and the oxygen isotope composition of water varied as well. The deposition of gold-productive mineral assemblages was caused by changes in pH, Eh, activities of S2, O2, and Te2. The recurrence of these changes and repeated mineral deposition within the same depth intervals formed bodies very rich in ore components. The above-mentioned data suggest the Kochbulak deposit represents a particular type of gold-telluride mineralization, which originated within a wide range of physicochemical conditions at hypabyssal to subsurface depths.????

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10.
Инвентарный номер: нет.
   
   T 19

   
    Tandem of nucleophilic substitution of hydrogen and cyclocondensation with participation of nitro group in the synthesis of fluorine-containing 3-amino-1,2,4-benzotriazines [Electronic resource] / G. A. Zhumabaeva, S. K. Kotovskaya, N. M. Perova, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 7. - P1243-1247
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of 3-fluoro-1-nitrobenzenes with guanidine hydrochloride in THF in the presence of ButOK gave isomeric 5-and 7-fluoro-containing 3-amino-1,2,4-benzotriazines

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (7), 1243.pdf
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11.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis, spectral and electrochemical properties of pyrimidine-containing dyes as photosensitizers for dye-sensitized solar cells [Electronic resource] / E. V. Verbitskiy [и др.] // Dyes and Pigments. - 2014. - Vol.100. - С. 201-214. - Bibliogr. : p. 213-214 (37 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ORGANIC DYES -- PYRIMIDINE -- MICROWAVE-ASSISTED
Аннотация: Six novel donor–π–acceptor organic dyes bearing a pyrimidine as the anchoring group have been obtained in good yields by combination of the microwave-assisted Suzuki cross-coupling and nucleophilic aromatic substitution of hydrogen reactions. Their absorption, photoluminescence and electrochemical properties were fully investigated in detail. The infrared spectra of dyes adsorbed on TiO2 indicate the formation of coordinate bonds between the pyrimidine ring of dyes and the Lewis acid sites (exposed Tin+ cations) of the TiO2 surface. This work demonstrates that the pyrimidine rings of dye sensitizers that form a coordinate bond with the Lewis acid site of a TiO2 surface are promising candidates as the electron-withdrawing anchoring group. The data from quantum calculations show that all of the dyes are potentially good photosensitizers for dye-sensitized solar cells

\\\\expert2\\NBO\\Dyes and Pigments\\2014, v. 100, p.201-214.pdf
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12.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis, Photophysical and Redox Properties of the D-pi-A Type Pyrimidine Dyes Bearing the 9-Phenyl-9H-Carbazole Moiety [Electronic resource] / E. V. Verbitskiy [и др.] // Journal of Fluorescence. - 2015. - Vol. 25, № 3. - С. 763-775. - Bibliogr. : p. 774-775 (51 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINES -- CARBAZOLE -- DYE-SENSITIZED SOLAR CELLS
Аннотация: Novel donor-pi-acceptor dyes bearing the pyrimidine unit as an electron-withdrawing group have been synthesized by using combination of two processes, based on the microwave-assisted Suzuki cross-coupling reaction and nucleophilic aromatic substitution of hydrogen. Spectral properties of the obtained dyes in six aprotic solvents of various polarities have been studied by ultraviolet-visible and fluorescence spectroscopy. In contrast to the absorption spectra, fluorescence emission spectra displayed a strong dependence from their solvent polarities. The nature of the observed long wavelength maxima has been elucidated by means of quantum chemical calculations. The electrochemical properties of these dyes have been investigated by using cyclic voltammetry, while their photovoltaic performance was evaluated by a device fabrication study. The experimental and calculation data show that all of the dyes can be regarded as potentially good photosensitizers for dye-sensitized solar cells.

\\\\expert2\\nbo\\Journal of Fluorescence\\2015, v.25, p.763-775.pdf
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13.
Инвентарный номер: нет.
   

   
    Synthesis, fungicidal activity, and molecular docking of 2-acylamino and 2-thioacylamino derivatives of 1 H-benzo[ d]imidazoles as anti-tubulin agents / K. L. Obydennov, T. A. Kalinina, N. A. Galieva [et al.] // Journal of agricultural and food chemistry. - 2021. - Vol. 69, № 40. - P12048-12062
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BENZIMIDAZOLES -- ANTIFUNGAL ACTIVITY -- TUBULIN -- CARBENDAZIM
Аннотация: This work deals with the synthesis and evaluation of fungicidal activity of benzimidazole derivatives, which are structural analogues of commercial anti-tubulin fungicides. A number of N-acyl and N-thioacyl derivatives of 2-amino-1H-benzo[d]imidazole were prepared, and their fungicidal activity against 13 strains of phytopathogenic fungi was studied. The most active compounds against the majority of the studied strains were 3a, 4l, and 4o, and the EC50 values of these compounds were in the range 2.5–20 μg/mL. Compound 3a showed the highest activity against the P. infestans strain, the growth of which is not suppressed by carbendazim. The formation of ligand–receptor complexes of various tautomeric forms of the studied benzimidazoles with homologous models of β-tubulins of B. cinerea, F. oxysporum, and P. infestans was modeled. Induced fit docking has been used for the simulation. The obtained data suggest the possibility of binding of benzimidazole fungicides to β-tubulin in the ″nocodazole cavity″ in the tautomeric form bearing a double exocyclic C═N bond. The importance of the formation of hydrogen bonds of benzimidazoles with the amino acid residue Val236 along with the Glu198 residue is also revealed in the present study.

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14.
Инвентарный номер: нет.
   

   
    Synthesis of δ-Valerolactone Using Stable Hydrogen Peroxide Derivatives / Y. V. Solovyova, A. V. Pestov, I. S. Puzyrev [et al.] // Russian Journal of Organic Chemistry. - 2022. - Vol. 58, № 4. - P480-483
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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15.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis of polyfluoroalkyl-containing 1-(4-acetoxybutyl)- and 1-(4-hydroxybutyl)pyrazoles and their tuberculostatic activity / A. E. Ivanova, O. G. Khudina, Ya. V. Burgart, V. I. Saloutin, M. A. Kravchenko // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №11. - С. 2396-2400
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- PYRAZOLES -- TUBERCULOSTATIC ACTIVITY
Аннотация: Alkylation of polyfluoroalkyl-containing pyrazoles with 4-bromobutyl acetate in acetone in the presence of potassium carbonate leads to a mixture of isomeric 1-(4-acetoxybutyl)-3-fluoroalkyl- and 1-(4-acetoxybutyl)-5-fluoroalkylpyrazoles, which in a number of cases were successfully separated by HPLC. Deacylation in acidic medium with gaseous hydrogen chloride and in basic medium with gaseous ammonia leads to 1-(4-hydroxybutyl)pyrazoles, which manifest moderate tuberculostatic activity

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (11), 2396-2400.pdf
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16.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis of novel 3-(pyridin-4-yl)-1,2,4-triazines, their analogs and study of the activity against vaccinia virus / O. V. Shabunina, Y. K. Shtaitz, D. S. Kopchuk [et al.] // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 4. - P462–466
УДК
Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- ANTIVIRAL ACTIVITY -- IPSO SUBSTITUTION -- NUCLEOPHILIC HYDROGEN SUBSTITUTION
Аннотация: Using atom-economical approaches, new representatives of 3-(pyridin-4-yl)-1,2,4-triazines and their 4-nitrophenyl analogs were obtained, and their activity in relation to the vaccinia virus was studied. The new compounds have shown promising characteristics, in particular, in comparison to the antiviral drug Cidofovir.

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17.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis of nitroxyl radical by direct nucleophilic functionalization of a C-H bond in the azadiene systems [Electronic resource] / M. V. Varaksin, E. V. Tretyakov, I. A. Utepova, G. V. Romanenko, A. S. Bogomyakov, D. V. Stass, R. S. Sagdeev, V. Ovcharenko, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2012. - Vol.61, №7. - С. 1469-1473. - Bibliogr. : p. 1473 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NITRONES -- NITRONYL NITROXYLS -- ESR SPECTRA
Аннотация: Cyclic dinitrones underwent nucleophilic substitution of the hydrogen atom in the reaction with a paramagnetic carbanion, the lithium derivative of 4,4,5,5 tetramethyl 4,5 dihydro 1H imidazol 1 oxyl 3 oxide, to give polyfunctional nitronyl nitroxyls

\\\\expert2\\NBO\\Russian Chemical Bulletin\\2012, 61 (7), 1469-1473.pdf
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18.
Инвентарный номер: нет.
   

   
    Synthesis of meso-substituted calix[4]arenes via reaction of nucleophilic substitution of hydrogen (snh) in azine or azine-n-oxides / T. D. Moseev, M. V. Varaksin, I. A. Lavrinchenko [et al.] // Actual problems of organic chemistry and biotechnology. - Екатеринбург, 2020. - P273-274
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CALIX[4]ARENES -- AZINES -- C-C COUPLING -- NUCLEOPHILIC SUBSTITUTION OF HYDROGEN

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19.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis of functionalised bipyridines by sequential nucleophilic substitution of hydrogen and cycloaddition in 1,2,4-triazine rings [Electronic resource] / D. N. Kozhevnikov, V. N. Kozhevnikov, T. V. Nikitina, V. L. Rusinov, O. N. Chupakhin, H. Neunhoeffer // Mendeleev Communications. - 2002. - Vol. 12, № 1. - P30-31
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- BIPYRIDINES -- TRIAZINE
Аннотация: A new methodology for the synthesis of functionalised bipyridines by the direct cyanation of 3-(2-pyridyl)-1,2,4-triazine 4-oxide through nucleophilic substitution for hydrogen followed by the transformation of the 1,2,4-triazine ring into the pyridine ring by the Diels–Alder reaction and, finally, the chemical conversion of the cyano group is described

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20.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis of fluorine-containing quinoline-2,3-dicarboxylates from products of vicarious nucleophilic substitution of hydrogen in 3-fluoronitroarenes [Electronic resource] / S. K. Kotovskaya, G. A. Zhumabaeva, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2009. - Vol. 58, № 1. - P170-175
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactions of 3-fluoro-4-R-6-phenylsulfonylmethylnitrobenzenes with dimethyl fumarate or diethyl maleate in acetonitrile in the presence of an excess of K2CO3 and a catalytic amount of 18-crown-6 afforded mixtures of dialkyl 6-R-7-fluoro- and dialkyl 6-R-7-phenylsulfonylquinoline-2,3-carboxylate N-oxides, as well as dialkyl 6-R-7-fiuoro- quinoline-2,3-carboxylates (alkyl is methyl or ethyl), which were resolved by column chromatography and identified by 1H NMR spectroscopy and X-ray diffraction

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