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Публикации Чарушина В.Н. (11)

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   F 94


    From 1,2,4-triazines towards Substituted pyridines and their cyclometalled Pt complexes [Electronic resource] / V. N. Kozhevnikov, M. M. Ustinova, P. A. Slepukhin, D. N. Kozhevnikov, Amedeo Santoro, W. Dunkan // Tetrahedron Letters. - 2008. - Vol. 49, № 26. - P4096-4098 : рис. - Библиогр. : с. 4098 (28 назв.) . - ISSN 0040-4039

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new, efficient methodology for the synthesis of substituted thienylpyridines includes the synthesis of 3-thienyl-1,2,4-triazines using simple heterocyclisation followed by easy transformation of the triazine ring to a pyridine through an aza Diels–Alder approach. A variety of substituted pyridines can be easily achieved using cheap, commercially available reagents such as bromoacetylarenes, aroyl hydrazides, norbornadiene, and enamines in various combinations. New thienylpyridines form phosphorescent cyclometallated Pt complexes.??

\\\\Expert2\\nbo\\Tetrahedron Letters\\2008, v. 49, p.4096.pdf
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   A 10


    A new approach to condensed pyridines [Electronic resource] / M. M. Krayushkin, V. N. Yarovenko, I. P. Sedishev, A. A. Andreiko, N. N. Mochul`skaya, V. N. Charushin // Mendeleev Communications. - 2005. - Vol. 15, № 4. - P151-152

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Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\Cserver\\Dist\\НБО\\Электронная библиотека_Библиогр1\\Mendeleev Communications\\2005, v.15, N 4,p.151.pdf
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   Д 26


    9-Allyl-1,7-dicarbadodecaborane as a dienophile in aza Diels-Alder reactions of 1,2,4-triazines: synthesis of pyridines bearing a carborane cage [Electronic resource] / A. M. Prokhorov, P. A. Slepukhin, V. L. Rusinov, V. N. Kalinin, D. N. Kozhevnikov // Tetrahedron Letters. - 2008. - Vol. 49, № 23. - P3785-3789

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRIAZINES -- PYRIDINES
Аннотация: The synthesis of pyridine and bipyridine derivatives of m-carborane via aza Diels–Alder reaction of 1,2,4-triazines with 9-allyl m-carborane and their structural characterization and photophysical properties are described. The products 3- and 4-(m-carborane-9-ylmethyl)-2,2`-bipyridines form Zn(II) complexes on reaction with ZnCl2, which increases significantly their fluorescence intensity.

\\\\Expert2\\nbo\\Tetrahedron Letters\\2008, v. 49, p.3785.pdf
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   F 94


    From 3-chloromethyl-1,2,4-triazine 4-oxides to various substituted pyridines and 1,2,4-triazines [Electronic resource] / V. N. Kozhevnikov, D. N. Kozhevnikov, O. V. Shabunina, N. N. Kataeva, S. A. Yushchuk, V. L. Rusinov, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 9. - P2187-2196. - Библиогр. : с. 2196 (24 назв.)

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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: An efficient strategy for the synthesis of new pyridine and 1,2,4-triazine derivatives starting from available 6-aryl-3-chloromethyl-1,2,4-triazine 4-oxides was proposed. The deoxygenative nucleophilic hydrogen substitution in the triazine-oxide ring, nucleophilic substitution of the chlorine atom in the side chain, and transformations of the 1,2,4-triazine ring into the pyridine ring via the inverse-electron-demand Diels-Alder reactions, being used in different orders, are a rather flexible tool for the functionalization of the titled heterocycles. The cyanide anion, indoles, thiophenols, amines, and triphenylphosphine were used as nucleophiles. The direct introduction of indole residues into the 1,2,4-triazine ring followed by the substitution of the chlorine atom by a residue of the primary or secondary aliphatic amine was found to be the most convenient method for the library synthesis.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (9), 2187-2196.pdf
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   A 53


    An efficient route to 5,5''-diaryl-2,2':6',2''-terpyridines through 2,6-bis(1,2,4-triazin-3-yl)pyridines [Electronic resource] / V. N. Kozhevnikov, D. N. Kozhevnikov, O. V. Shabunina, V. L. Rusinov, O. N. Chupakhin // Tetrahedron Letters. - 2005. - Vol. 46, № 9. - P1521-1523

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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new route to substituted 2,2`:6`,2``-terpyridines based on a new method for the synthesis of substituted 2,6-bis(1,2,4-triazin-3-yl)pyridines and their inverse electron demand Diels-Alder reaction is shown to be an efficient strategy for the synthesis of structurally diverse terpyridine ligands.

\\\\Expert2\\nbo\\Tetrahedron Letters\\2005, v. 46, p.1521.pdf
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   S 83


    Stereoselective hetero-Diels-Alder reaction of 3-(polyfluoroacyl)chromones with enol ethers. Novel synthesis of 2-R -containing nicotinic acid derivatives [Text] / V. Ya. Sosnovskikh, I. A. Khalymbadzha, R. A. Irgashev, P. A. Slepukhin // Tetrahedron. - 2008. - Vol. 64, № 44. - P10172-10180 : рис., табл. - Библиогр. : с. 10180 (15 назв.)

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Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\Expert2\\nbo\\Tetrahedron\\2008, v. 64, N44, p. 10172.pdf
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   S 83


    Stereoselective hetero-Diels-Alder reaction of 3-(trifluoroacetil)chromones with ceclic enol ethers: synthesis of 3-aroyl-2-(trifluoromethyl)pyridines with omega-hydroxyalkyl groups [Text] / V. Ya. Sosnovskikh, R. A. Irgashev, I. A. Khalymbadzha, P. A. Slepukhin // Tetrahedron Letters. - 2007. - Vol. 48, № 36. - P6297-6300

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Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\Expert2\\nbo\\Tetrahedron Letters\\2007, v. 48, p.6297.pdf
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   S 98


    Synthesis of cyclometallated platinum complexes with substituted thienylpyridines and detailed characterization of their luminescence properties [Text] / D. N. Kozhevnikov, V. N. Kozhevnikov, M. M. Ustinova, A. Santoro, D. W. Bruce, B. Koenig, T. Fisher, M. Zabel, H. Yersin // Inorganic Chemistry . - 2009. - Vol. 48, № 9. - P4179-4189

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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Synthesis of various derivatives of 2-(2-thienyl)pyridine via substituted 3-thienyl-1,2,4-triazines is reported. The final step of the synthesis is a transformation of the triazine ring to pyridine in an aza-Diels-Alder-type reaction. The resulting 5-aryl-2-(2-thienyl)pyridines (HL1-HL4) and 5-aryl-2-(2-thienyl)cyclopenteno[c]pyridines (HL5-HL8) (with aryl = phenyl, 4-methoxyphenyl, 2-naphtyl, and 2-thienyl) were used as cyclometallating ligands to prepare a series of eight luminescent platinum complexes of the type [Pt(L)(acac)] (L = cyclometallating ligand, acac = acetylacetonato). X-ray single crystal structures of three complexes of that series, [Pt(L5)(acac)] = [Pt(5-phenyl- 2-(2-thienyl)cyclopenteno[c]pyridine)(acac)], [Pt(L6)(acac)] = [Pt(5-(4-methoxy)-2-(2-thienyl)cyclopenteno[c]py- ridine)(acac)], and [Pt(L7)(acac)] = [Pt(5-(2-naphtyl)-2-(2-thienyl) cyclopenteno[c]pyridine)(acac)] were determined. Photoluminescence and electronic absorption spectra of the new [Pt(L)(acac)] complexes are reported. For two representative compounds of that series, [Pt(L4)(acac)] and [Pt(L5)(acac)], a detailed photophysical characterization based on highly resolved emission and excitation spectra, as well as on emission decay properties, was carried out. The studies down to low temperature (T = 1.2 K) and up to high magnetic fields (6 = 10 T) allowed us to characterize the three individual substates of the emitting triplet state. In particular, it is shown that the lowest triplet states of [Pt(L4)(acac)] and [Pt(L5)(acac)] are largely ligand-centered (LC) of3jtjt*character, which experience only weak spin- orbit couplings to higher lying singlet states

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   A 10


    A new family of Chromophores based on 2-pyridines and oxazoles for the off-resonant optical kerr effect [Text] : доклад, тезисы доклада / O. N. Chupakhin, G. L. Rusinov, D. G. Beresnev, N. A. Itsikson, I. G. Ovchinnikova, O. V. Fedorova // XXth European Colloquium on Heterocyclic Chemistry, Stockholm,Sweden, 18-21 Aug. 2002 г. - Stockholm, 2002. - PG:1

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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10.

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   S 98


    Synthesis of pyridines from 1,2,4-triazines under high pressure [Electronic resource] / M. M. Krayushkin, I. P. Sedishev, V. N. Yarovenko, I. V. Zavarzin, S. K. Kotovskaya, D. N. Kozhevnikov, V. N. Charushin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2008. - Vol. 44, № 3. - P407-411

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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A procedure has been proposed for the synthesis of pyridines from 1,2,4-triazine derivatives and bicyclo[2.2.1]hepta-2,5-diene under high pressure in the presence of lithium perchlorate as catalyst

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2008, 44 (3), 407.pdf
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11.

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   T 19


    Tandem AN—AN reactions in the synthesis of 1H-pyrrolo[3,2-e]-1,2,4-triazines and products of their oxidative transformations [Electronic resource] / V. N. Charushin, N. N. Mochul`skaya, A. A. Andreiko, M. I. Kodess, I. A. Litvinov, O. G. Sinyashin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2003. - Vol. 52, № 8. - P1740-1749

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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactions of 3-aryl-1,2,4-triazines with -aminovinyl ketones or ethyl -aminocrotonates in acetic anhydride at room temperature afforded cyclic products of the tandem nucleophilic addition, viz., 3a,4,7,7a-tetrahydro-1H-pyrrolo[3,2-e]-1,2,4-triazines, in good yields. Under oxidative conditions, the latter compounds underwent the pyrrole-ring opening under the action of potassium permanganate to form the corresponding triazinones and were transformed into thriazolyl-substituted pyridines under the action of selenious acid

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2003, 52 (8), 1740.pdf
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12.

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   A 10


    A Novel Route to the Synthesis of Fluoroalkylated Hexahydroimidazo[1,2-a]pyridines [Text] / Yu. S. Kudyakova, M. V. Goryaeva, Ya. V. Burgart, V. I. Saloutin // IV International Conference "Multi-Component Reactions and Related Chemistry", Ekaterinburg, 24-28 May 2009. - Екатеринбург, 2009. - PS 22

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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13.

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   S 98


    Synthesis of Functionalized Fluorescent Europium(III) Terpyridyl Chelates [Text] / V. N. Kozhevnikov, D. N. Kozhevnikov, V. L. Rusinov, O. N. Chupakhin, B. Konig // Synthesis. - 2003. - № 15. - P2400-2404. - Bibliogr. : p. 2404 (19 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DIELS-ALDER REACTION -- HETEROCYCLES -- LANTHANIDE -- LIGANDS -- PYRIDINES -- EUROPIUM
Аннотация: The synthesis of substituted terpyridines via triazine intermediates is described. The intermediates allow the facile introduction of cyano groups, which are converted into amino diacetic acid moieties. Together with the terpyridine nitrogen atoms they shield coordinated europium(III) ions completely from the solvent. The terpyridines may be further functionalized for specific applications using ligands, bromo substituents, and standard transition metal mediated coupling methods. This makes the title compounds valuable intermediates for the preparation of luminescent probes in biochemistry, medicinal diagnostics or materials science.

\\\\Expert2\\nbo\\Synthesis\\2003, v.15. p.2400.Chupakhin.pdf
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14.

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   S 98


    Synthesis and structures of pyridoannelated 1,2,3,4-tetrazine 1,3-dioxides [Electronic resource] / V. A. Tartakovsky, I. E. Filatov, A. M. Churakov, S. L. Ioffe, Yu. A. Strelenko, V. S. Kuzmin, G. L. Rusinov, K. I. Pashkevich // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 11. - P2577-2583

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Treatment of 2- and 4-amino-3-(tert-butyl-NNO-azoxy)pyridines with nitrating agents (N2O5or NO2BF4) afforded the first representatives of pyridoannelated 1,2,3,4-tetrazine di-N-oxides, viz., pyrido[2,3-e][1,2,3,4]tetrazine 1,3-dioxide (9), 7-nitropyrido[2,3-e][1,2,3,4]tetrazine 1,3-dioxide (10), and pyrido[3,4-e][1,2,3,4]tetrazine 2,4-dioxide (11). These compounds were studied by 1H, 13C, and 14N NMR spectroscopy. The 1:1 complex of compound 10 with benzene was studied by X-ray diffraction analysis.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (11), 2577.pdf
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15.

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   S 98

    Rusinov, G. L.
    Synthesis of 2-substituted 6,8-dinitro[1,2,4]triazolo[1,5-a]pyridines and the formation of the related zwitterionic sigma-adducts [Electronic resource] / G. L. Rusinov, V. L. Mikhailov, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1999. - Vol. 48, № 7. - P1391-1393

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method for the synthesis of 2-substituted 6,8-dinitro[1,2,4]triazolo[1,5-a]pyridines is proposed. The method includes the reaction of 2-chloro-3,5-dinitropyridine with the corresponding 5-substituted tetrazoles. The resulting compounds react with anhydro bases of ?- and ?-methylazinium salts to give zwitterionic ?-adducts.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1999, 48 (7), 1391.pdf
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16.

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   L 96


    Luminescent metallocomplexes of functionalized pyridines : from ligand design towards special properties [Text] : доклад, тезисы доклада / D. N. Kozhevnikov, D. S. Kopchuk, M. Z. Shafikov, A. M. Prokhorov // International conference "Topical Problems of Organometallic and Coordination Chemistry", V Razuvaev lectures, N. Novgorod, September 3-9 2010 : book of abstracts . - Nizhny Novgorod, 2010. - S13 : рис.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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17.

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    2,6-Bis(5-trifluoromethylpyrazol-3-yl)pyridine : complexation with selected d-metals [Text] : доклад, тезисы доклада / E. F. Khmara, D. L. Chizhov, A. A. Sidorov, G. G. Alexandrov, V. I. Filyakova, G. L. Rusinov, I. L. Eremenko, V. N. Charushin // International conference "Topical Problems of Organometallic and Coordination Chemistry", V Razuvaev lectures, N. Novgorod, September 3-9 2010 : book of abstracts . - Nizhny Novgorod, 2010. - P34 : рис. - Bibliogr. : p. 34 (2 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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18.

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   G 65

    Goryaeva, M. V.
    Peculiarities of cyclization of ethyl 2-ethoxymethylene-3-oxo-3- (polyfluoroalkyl)propionates with 3-amino-5-hydroxypyrazole [Electronic resource] / M. V. Goryaeva, Ya. V. Burgart, V. I. Saloutin // Journal of Fluorine Chemistry. - 2013. - Vol.147. - P15-21

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
3-AMINO-5-HYDROXYPYRAZOLE -- RECYCLIZATION -- PYRIDINES
Аннотация: The reactions of ethyl 2-ethoxymethylene-3-oxo-3-(polyfluoroalkyl) propionates with 3-amino-5-hydroxypyrazole result in ethyl 2,7-dihydroxy-7- (polyfluoroalkyl)-4,7-dihydropyrazolo[1,5-a]pyrimidin-6-carboxylates under mild conditions. These products undergo recyclization in refluxing ethanol to form ethyl 3-hydroxy-4-(polyfluoroalkyl)-1H-pyrazolo[3,4-b]pyridin-5-carboxylates, whereas in refluxing glacial acetic acid they are dehydrated to ethyl 2-hydroxy-7-(polyfluoroalkyl)pyrazolo[1,5-a]pyrimidin-6-carboxylates. The non-fluorinated ethyl 2-ethoxymethylene-3-oxo esters in the reactions with 3-amino-5-hydroxypyrazole in ethanol (or glacial acetic acid) under reflux form only ethyl 2-hydroxy-7-phenyl(hydroxy)pyrazolo[1,5-a]pyrimidin-6-carboxylates

\\\\Expert2\\NBO\\Journal of Fluorine Chemistry\\2013, v. 147, p.15.pdf
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19.

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   E 31

    Egorov, I. N.
    Asymmetric induction in reactions of chiral acylazinium salts (review) [Электронный ресурс] / I. N. Egorov, V. L. Rusinov, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 2012. - Vol.48, №5. - P684-697

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- ACYLAZINIUM SALTS -- ASYMMETRIC INDUCTION
Аннотация: The effectiveness of asymmetric induction in the reactions of chiral acylazinium salts produced from pyridines, quinolines, isoquinolines, 1,2,4-triazinones, and a series of chiral acylating agents is analyzed

\\\\Expert2\\NBO\\Chemistry of Heterocyclic Compounds\\2012, v.48, N 5, p.684-697.pdf
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20.

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   U 52


    Unexpected reduction of the nitro group in (3-nitrophenyl)-1,2,4-triazines during their aza-Diels–Alder reaction with 1-morpholinocyclopentene [Electronic resource] / D. S. Kopchuk, A. F. Khasanov, I. S. Kovalev, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin // Mendeleev Communications. - 2013. - Vol.23, №4. - С. 209-211. - Bibliogr. : p. 211 (15 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- NITRO GROUP -- MORPHOLINOCYCLOPENTENE
Аннотация: Unexpected reduction of the nitro group to the amino one during aza-Diels–Alder reaction between (3-nitrophenyl)-1,2,4-triazines and 1-morpholinocyclopentene (neat, 200 °C, argon) occurred to furnish 4-(3-aminophenyl)-6,7-dihydro-5H-cyclopenta[c]pyridines

\\\\expert2\\NBO\\Mendeleev Communications\\2013, v.23, p. 209.pdf
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21.

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   S 98


    Synthesis of 6-thienyl-substituted 2-amino-3-cyanopyridines [Electronic resource] / E. V. Verbitskiy, E. M. Cheprakova, M. G. Pervova, G. G. Danagulyan, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - С. 689-694. - Bibliogr. : p. 694 (25 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINES -- TRANSFORMATIONS OF HETEROCYCLE -- PYRIDINES
Аннотация: An efficient method for the synthesis of 6-thienyl-substituted 2-amino-3-cyanopyridines by the ring transformation in the corresponding pyrimidines was developed. Further modification of the pyridines obtained under conditions of a room temperature aerobic Suzuki reaction in the presence of trans-bis(dicyclohexylamine) palladium(II) acetate as a catalyst was studied.

\\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 64 (3), 689-694.pdf
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22.

Инвентарный номер: нет.

   U 52


    Unexpected formation of diethyl 2-ethoxy-6-CF.sub.3-2H-pyran-3,5-dicarboxylate from the condensation of ethyl 4,4,4-trifluoroacetoacetate with CH(OEt).sub.3 / Y. S. Kudyakova, D. N. Bazhin, P. A. Slepukhin, Ya. V. Burgart, V. I. Saloutin, V. N. Charushin // Tetrahedron Letters. - 2017. - Vol. 58, № 8. - P744-747

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRAN -- DETRIFLUOROACETYLATION -- ETHYL TRIFLUOROACETOACETATE -- CONDENSATION -- PYRIDINES
Аннотация: The one-step preparation of diethyl 2-ethoxy-6-CF3-2H-pyran-3,5-dicarboxylate via the condensation of ethyl 4,4,4-trifluoroacetoacetate with CH(OEt)3 has been reported and a plausible mechanism for this transformation is discussed. To demonstrate the synthetic potential of the obtained pyran, the reactions with ammonia and aromatic amines to give trifluoromethylated pyridine derivatives are presented.

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23.

Инвентарный номер: нет.



    Metal-free site selective cross-coupling of pyridines with secondary phosphine chalcogenides using acylacetylenes as oxidants / B. A. Trofimov, P. A. Volkov, K. O. Khrapova, A. A. Telezhkin, N. I. Ivanova, A. I. Albanov, N. K. Gusarova, O. N. Chupakhin // Chemical communications. - 2018. - Vol. 54, № 27. - P3371-3374
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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24.

Инвентарный номер: нет.



    Design of fluorescent sensors based on azaheterocyclic push-pull systems towards nitroaromatic explosives and related compounds: a review / E. V. Verbitskiy, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Dyes and pigments. - 2020. - Vol. 180. - P108414
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NITROAROMATIC EXPLOSIVES -- FLUORESCENCE QUENCHING -- PYRIDINES -- PYRAZINE -- PYRIMIDINES -- TRIAZINES
Аннотация: Highly sensitive and selective detection of nitro containing high energy organic compounds such as picric acid (PA), 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT) has become a challenging task due to concerns over national security, criminal investigations and environment protections. Among various known detection methods, fluorescence sensors have gained special attention in recent time. The family of fluorescent sensors based on push-pull systems that incorporate nitrogen heterocycles as an electron-withdrawing group have a growing interest due to their high sensitivity, selectivity and easy tuning. The fluorescent sensors discussed in this review are classified and organized according to used azaheterocyclic scaffold, their functionality and their ability to detect of nitroaromatics by fluorescence quenching.

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25.

Инвентарный номер: нет.

   A 10


    A new synthesis of 4'-trifluoromethyl-2,2':6',2"-terpyridine / V. I. Filyakova, N. S. Boltacheva, M. G. Pervova, V. N. Charushin // Mendeleev Communications. - 2021. - Vol. 31, № 3. - P388-389

ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ORGANOFLUORINE COMPOUNDS -- b-AMINOVINYL KETONES -- REGIOISOMERISM -- HETEROCYCLIZATION -- PYRIDINES -- 2,2':6',2''-TERPYRIDINES
Аннотация: Reflux of two isomeric 3-amino-4,4,4-trifluoro-1-(2-pyridyl)but-2-en-1-one and 3-amino-1,1,1-trifluoro-4-(2-pyridyl)-but-3-en-2-one in acetic acid affords 4′-trifluoromethyl-2,2′:6′,2″-terpyridine (37%) with 1.4% admixture of 6′-trifluoromethyl-2,2′:4′,2″-terpyridine.

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26.

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    Multicomponent domino reactions for the synthesis of variable hydrogenated imidazo[1,2-a]pyridines / S. O. Kushch, M. V. Goryaeva, E. A. Surnina [et al.] // Asian journal of organic chemistry. - 2021. - № 11. - Pe2021007
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Autocatalyzed one-pot multicomponent cyclization of polyfluoroalkyl-3-oxo ester and ethylenediamine with aldehyde is an effective approach to octa-, hexa- and tetrahydroimidazo[1,2-a]pyridines generated mainly due to the α,β-unsaturated aldehyde addition, often formed in situ, to the 3-oxo ester methylene fragment, followed by the pyridine backbone closure at one of the carbonyl groups.

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27.

Инвентарный номер: нет.



    Azolyl pyrimidines-synthesis and antimicrobial activity / N. H. Basha, T. Rekha, V. Padmavathi [et al.] // AIP conference proceedings. - 2022. - Vol. 2390. - Ст. 020006
Рубрики: ЗДРАВООХРАНЕНИЕ. МЕДИЦИНСКИЕ НАУКИ
   ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHEMICAL COMPOUNDS -- PHARMACEUTICALS -- ANTIMICROBIALS
Аннотация: Amide unit is a privileged structural motif and is a constituent of proteins, natural products and pharmaceuticals. Amongst different heterocyclic scaffolds, azoles and pyrimidines are the prominent entities in pharmaceutical arena. The biopotency of these heterocycles have triggered to synthesize a variety of heteroaromatics – azoles linked with pyridines by amino acetamide group. The target molecules-azolylaminoacetamidopyrimidines were prepared by the reaction of methyl azolylglycinate with pyrimidinyl-2-amine in the presence of DMAP and triethylamine in dichloromethane under ultrasonication. The lead molecules were evaluated for antimicrobial activity. Nitro substituted 2-((4-(4-chlorofuran-2-yl)thiazole-2-yl)amino)-N-(4,6-diphenylpyrimidin-2-yl)acetamide (9c) displayed excellent antibacterial activity against B. subtilis greater than the standard drug Chloramphenicol. However, 9c and nitro substituted 2-((4-(4-chlorofuran-2-yl)-1H-imidazol-2-yl)amino)-N-(4,6-diphenylpyrimidin-2-yl)acetamide (10c) showed antifungal activity on A. niger greater than the standard drug Ketoconazole.

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28.

Инвентарный номер: нет.



    Synthesis and photophysical properties of pyridyl- and quinolinyl-substituted bis(arylthienyl)pyridines / T. N. Moshkina, E. V. Nosova, A. E. Kopotilova [et al.] // Journal of photochemistry and photobiology A: Chemistry. - 2022. - Vol. 427. - Ст. 113805
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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29.

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    1H-pyrazole-appended pyridines and their 1,2,4-triazine precursors: a rational synthesis and in silico and in vitro evaluation of anti-cancer activity / A. P. Krinochkin, Y. K. Shtaitz, A. K. Rammohan [et al.] // European Journal of Organic Chemistry. - 2022. - Vol. 2022, № 22. - Pe202200227
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: An operationally facile and high yielding one-pot protocol has been developed for the preparation of pyridines appended with pyrazole via NH linker. This protocol includes SNipso/aza-Diels-Alder reactions in up to 54 % yields starting from 1,2,4-triazine precursors. All the synthesized compounds have been evaluated for their in silico activity against JAK1, SYK, and FAK1 kinases. The most promising compound was tested in vitro using A-172, Hs578T, and HepG2 cancer cell lines and exhibited considerable cytotoxicity with IC50 values 50 μM in A-172 and HepG2 cell lines. Anticancer in vitro activity correlates well with the predicted in silico data.

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30.

Инвентарный номер: нет.



    Coumarin-pyridine push-pull fluorophores: synthesis and photophysical studies / R. F. Fatykhov, A. D. Sharapov, E. S. Starnovskaya [et al.] // Spectrochimica acta part A: molecular and biomolecular spectroscopy. - 2022. - Vol. 267. - Ст. 120499
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of coumarin-pyridine-based push-pull fluorophores were prepared starting from 1,2,4-triazines by using direct C-H functionalization (SNH-reaction)–Diels-Alder–retro Diels-Alder domino reaction sequence. This efficient synthetic strategy allowed to obtain a series of 19 coumarin-pyridine fluorophores. Their photophysical properties were studied. While pyridine-substituted derivatives of 4-alkylcoumarins may be considered as alternative to coumarin dyes characterized by emission maxima mainly in a visible region with wavelengths of 402–415 nm, absorption in the UV range at 210–307 nm, and good photoluminescence quantum yields of 6–19%, all the derivatives of 4-phenylcoumarin did not exhibit any noticeable fluorescence. More detailed photophysical studies were carried out for two the most representative derivatives of 4-alkyl-coumarin-pyridines to demonstrate their positive solvatochromism, and the collected data were analyzed by using Lippert-Mataga equation, as well as Kosower and Dimroth/Reichardt scales. The obtained results demonstrate that the combining two chromophore systems, such as 2,5-diarylpyridine and coumarin ones, is promising in terms of improving the photophysical properties of the new coumarin-pyridine hybrid compounds.

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