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 Найдено в других БД:Труды сотрудников Института органического синтеза УрО РАН (9)
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Поисковый запрос: (<.>K=FURAN<.>)
Общее количество найденных документов : 7
Показаны документы с 1 по 7
1.
Инвентарный номер: нет.
   
   A 10


   
    A concise approach to CF3-containing furan-3-ones, (bis)pyrazoles from novel fluorinated building blocks based on 2,3-butanedione [Electronic resource] / D. N. Bazhin, G. -V. Roeschenthaler, D. L. Chizhov, Yu. S. Kudyakova, Ya. V. Burgart, P. A. Slepukhin, V. I. Saloutin, V. N. Charushin // Tetrahedron Letters. - 2014. - Vol. 55. - С. 5714-5717. - Bibliogr. : p. 5717 (16 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ClISEN CONDENSATION -- AKOXYENONES; -- TRIFLUOROACETYLATION
Аннотация: 1,1,1-Trifluoro-4,5,5-trimethoxyhex-3-en-2-one and lithium (2Z)-1,1,1-trifluoro-5,5-dialkoxy-4-oxohex-2-en-2-olate were synthesized for the first time via direct trifluoroacetylation of 2,3-butanedione acetal derivatives. A simple and effective approach to acetal or acyl substituted CF3-pyrazoles, 5,5′-bis(trifluoromethyl)-3,3′-bipyrazole, and, to 5-trifluoromethylfuran-3-ones is presented.

\\\\expert2\\nbo\\Tetrahedron Letters\\2014, v. 55, p. 4525.pdf
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2.
Инвентарный номер: нет.
   
   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.)
ББК 54
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
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3.
Инвентарный номер: нет.
   
   A 67


   
    Application of 1H and 13C NMR to the structural elucidation of tetrahydroquinoxalines condensed with five-membered heterocycles [Electronic resource] / V. N. Charushin, A. I. Chernyshev, N. N. Sorokin, O. N. Chupakhin // Organic Magnetic Resonance. - 1984. - Vol. 22, № 12. - P775-778. - Bibliogr. : p. 778 (22 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
N-METHYLTETRAHYDROQUINOXALINES -- PYRROLE -- IMIDAZOLE
Аннотация: 1H and 13C NMR spectral data for 21 N-methyltetrahydroquinoxalines annelated with furan, pyrrole, imidazole or thiazole rings are reported. Unambiguous assignments of the ring junction 13C resonances were made on the basis of selective decoupling experiments and with the aid of one-bond and long-range 13C–1H coupling constants. The effects of five-membered heterocycles on the 1H and 13C chemical shifts of the ring junction hydrogen and carbon atoms are considered. Values of one-bond 1J(CH) and vicinal 3J(HH) coupling constants between the ring junction protons are also discussed as a diagnostic means for structural elucidation of tetrahydroquinoxalines condensed with five-membered heterocycles.

\\\\expert2\\nbo\\Organic Magnetic Resonance\\1984. V. 22, N 12. P. 775.pdf
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4.
Инвентарный номер: нет.
   
   A 10


   
    A Convenient Approach to CF3-Containing N-Heterocycles Based on 2-Methoxy-2-methyl-5-(trifluoromethyl)furan-3(2H)-one [Electronic resource] / D. N. Bazhin, Yu. S. Kudyakova, G. -V. Roeschenthaler, Ya. V. Burgart, P. A. Slepukhin, M. L. Isenov, V. I. Saloutin, V. N. Charushin // European Journal of Organic Chemistry. - 2015. - № 23. - С. 5236-5245. - Bibliogr. : p. 5245 (23 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
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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5.
Инвентарный номер: нет.
   
   C 47


    Charushin, V. N.
    The Reactions of Azines on Treatment with 1,3-Bifunctional Nucleophiles [Electronic resource] / V. N. Charushin, O. N. Chupakhin // Russian Chemical Reviews. - 1984. - Vol. 53, № 10. - P956-970. - Bibliogr. : p. 969-970 (152 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZINES -- 1,3-BIFUNCTIONAL NUCLEOPHILES -- FURAN -- PYRROLE -- IMIDAZOLE
Аннотация: The literature data on the o-cyclisation reactions of azines with 1,3-bifunctional nucleophiles, which make it possible to annelate furan, pyrrole, imidazole, and other five-membered rings to an aromatic aza-ring are surveyed and described systematically. The cyclisation reactions leading to m-linked cyclic adducts or products of the transformation of azines via the intermediate formation of cyclic m- and p-adducts are also examined.

\\\\expert2\\nbo\\Russian Chemical Reviews\\1984, V.53, N10, p. 956-970.pdf
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6.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and biological evaluation of novel 5-aryl-4-(5-nitrofuran-2-yl)-pyrimidines as potential anti-bacterial agents / E. V. Verbitskiy [et al.] // Bioorganic and Medicinal Chemistry Letters. - 2017. - Vol. 27, № 13. - P3003-3006
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINE -- NITROFURAN -- ANTIGONORRHEAL -- ANTIMYCOBACTERIAL -- NUCLEOPHILIC AROMATIC SUBSTITUTION OF HYDROGEN
Аннотация: A facile two-step synthetic approach to fluorinated and non-fluorinated 5-aryl-4-(5-nitrofuran-2-yl)-pyrimidines from readily available 5-bromo-4-(furan-2-yl)pyrimidine has been developed. All synthesized compounds were screened in vitro for their antibacterial activities against twelve various bacterial strains. It is demonstrated that some of these compounds exhibited significant antibacterial activities against strains Neisseria gonorrhoeae and Staphylococcus aureus, comparable and even higher with that commercial drug Spectinomycin.

\\\\Expert2\\NBO\\Bioorganic and Medicinal Chemistry Letters\\2017 v.27 p.3003-3006.pdf
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7.
Инвентарный номер: нет.
   
   R 43


   
    Renaissance of 4-(5-nitrofuran-2-yl)-5-arylamino substituted pyrimidines: microwave-assisted synthesis and antitubercular activity / E. V. Verbitskiy, S. A. Baskakova, D. V. Belyaev [et al.] // Mendeleev Communications. - 2021. - Vol. 31, № 2. - P210-212
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The Buchwald–Hartwig cross-coupling of 5-bromo-4-(furan-2-yl)pyrimidine with various anilines afforded the corresponding new 5-(arylamino)pyrimidines, the reaction being accelerated by microwave irradiation. Most of the obtained compounds proved to possess a high bacteriostatic in vitro effect against Mycobacterium tuberculosis H37Rv, Neisseria gonorrhoeae, and Staphylococcus aureus including Methicillin-resistant strain, which is stronger than that of the commercial drug Spectinomycin.

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