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Общее количество найденных документов : 25
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1-20 21-25

Инвентарный номер: нет.

   A 10


    A convenient approach to the design and synthesis of indolo[3,2-c]coumarins via the microwave-assisted Cadogan reaction [Electronic resource] / R. A. Irgashev, A. A. Karmatsky, P. A. Slepukhin, G. L. Rusinov, V. N. Charushin // Tetrahedron Letters. - 2013. - Vol.54, №42. - С. 5734-5738. - Bibliogr. : p. 5738 (17 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
COUMARINS -- MICROWAVE-ASSISTED -- CADOGAN REACTION
Аннотация: 3-(4,5-Dimethoxy-2-nitrophenyl)coumarins bearing various substituents on the benzene ring of the coumarin system have been prepared from salicylaldehydes and 2-(4,5-dimethoxy-2-nitrophenyl)acetonitrile by means of the Perkin condensation. Further cyclization of these 3-aryl coumarins through the microwave-assisted Cadogan reaction afforded the corresponding indolo[3,2-c]coumarins in good to excellent yields

\\\\expert2\\NBO\\Tetrahedron Letters\\2013, v. 54, p. 5734.pdf
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   A 10


    A simple and convenient synthesis of 4-methyl-3-nitro-2-trihalomethyl-2H-chromenes from N-unsubstituted imines of 2-hydroxyacetophenones and trichloro(trifluoro)ethylidene nitromethanes [Text] / V. Yu. Korotaev, V. Ya. Sosnovskikh, I. B. Kutyashev, A. Yu. Barkov, E. G. Matochkina, M. I. Kodess // Tetrahedron. - 2008. - Vol. 64, № 22. - P5055-5060

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reaction of N-unsubstituted imines of 2-hydroxyacetophenones with trichloro(trifluoro)ethylidene nitromethanes in the presence of DABCO proceeds via tandem oxa-Michael/aza-Henry additions (in dichloromethane) or aza-Michael addition (in benzene) to give 4-methyl-3-nitro-2-trichloro(trifluoro)methyl-2H-chromenes or 1,1,1-trichloro(trifluoro)-3-nitro-N-[1-(2-hydroxyaryl)ethylidene]propan-2-amines, respectively????

\\\\Expert2\\nbo\\Tetrahedron\\2008, v. 64, N22, p. 5050.pdf
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   A 10


    A simple synthesis of the pentacyclic lamellarin skeleton from 3-nitro-2-(trifluoromethyl)-2H-chromenes and 1-methyl(benzyl)-3,4-dihydroisoquinolines / V. Yu. Korotaev, V. Ya. Sosnovskikh, A. Yu. Barkov, P. A. Slepukhin, M. A. Ezhikova, M. I. Kodess, Yu. V. Shklyaev // Tetrahedron. - 2011. - Vol. 67, № 45. - С. 8685-8698

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
LAMELLARIN ALKALOIDS -- ISOQUINOLINE DERIVATIVES -- HETEROCYCLIC SYSTEM
Аннотация: The basic structural framework of lamellarin alkaloids, 8,9-dihydro-6H-chromeno[4?,3?:4,5]pyrrolo[2,1-a]isoquinoline derivatives, has been obtained in good yields via Grob synthesis between 3-nitro-2-(trifluoromethyl)-2H-chromenes and 1-methyl-3,4-dihydroisoquinolines in refluxing isobutanol. In the case of 1-benzyl-3,4-dihydroisoquinolines, a dynamic NMR effect was observed in the 1H and 19F NMR spectra of the products as a result of restricted rotation about the single bond linking the benzene ring and the heterocyclic system. When the reaction was carried out with 3-nitro-2-(trichloromethyl)-2H-chromenes in toluene at room temperature, only Michael adducts, as a mixture of two diastereomers, were isolated.??????--------------------------------------------------------------------------------??

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    Andreikov, E. I.
    Research on the processing of coal tar and raw benzene at AO VUKHIN / E. I. Andreikov, V. A. Titushkin // Coke and Chemistry . - 2021. - Vol. 64, № 3. - P108-111
Кл.слова (ненормированные):
COAL TAR -- TAR DISTILLATION -- RAW BENZENE -- ELECTRODE PITCH
Аннотация: Research on the processing of coal tar and benzene products at AO VUKhIN is reviewed.

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   C 31


    Catalyst-free transformations of diethyl 2-ethoxymethylenemalonate and diethyl polyfluorobenzoylmalonates in water / D. N. Bazhin, Yu. S. Kudyakova, Ya. V. Burgart, V. I. Saloutin // Tetrahedron Letters. - 2012. - Vol. 53, №15. - С. 1961-1963

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,3,5-BENZENETRICARBOXYLATE -- WATER -- POLYFLUOROBENZOYLMALONATES
Аннотация: The unusual transformation of diethyl 2-ethoxymethylenemalonate into triethyl 1,3,5-benzenetricarboxylate is described. This one-pot reaction proceeds in water without any catalyst in a good yield. One of the proposed intermediates of this process is also used under similar conditions to give the desired trisubstituted benzene. A catalyst-free, efficient, practical, and convenient process in water based on deethoxycarbonylation has been developed to form ethyl polyfluorobenzoylacetates in a high yield from diethyl polyfluorobenzoylmalonates

\\\\Expert2\\nbo\\Tetrahedron Letters\\2012, v. 53, p. 1961.pdf
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   C 51


    Chemoenzymatic Synthesis and Antiherpes Activity of 5-Substituted 4,6-Difluorobenzimidazoles Ribo- and 2′-Deoxyribonucleosides [Электронный ресурс] / M. I. Kharitonova, I. V. Fateev, A. L. Kayushin, I. D. Konstantinova, S. K. Kotovskaya, V. L. Andropova, G. A. Galegov, V. N. Charushin, A. I. Miroshnikov // Synthesis (Germany). - 2016. - Vol. 48, № 3. - С. 394-406. - Bibliogr. : p. 405-406 (37 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DRUG DISCOVERY- -- NUCLEOSIDES -- HERPES SIMPLEX VIRUS
Аннотация: A series of 5,6-disubstituted benzimidazole nucleosides, obtained earlier, did not show any significant antiviral activity at relatively low cytotoxicity in vitro. In the course of our research we have succeeded in introducing an additional fluorine atom into the benzimidazole ring system. A new series of 4,6-difluorobenzimidazoles, bearing various groups (fluoro-, methoxy-, ethoxy-, morpholino-, and pyrrolidino-) in the 5-position of the benzene ring, have been synthesized. All these compounds proved to be substrates for recombinant E. coli purine nucleoside phosphorylase (PNP) in the transglycosylation reaction. Effective methods for the synthesis of ribo- and 2′-deoxyribonucleosides with high yields (60–90%) have been described, and the formation of regioisomeric N3-nucleosides of benzimidazoles have been detected. The biological activity of the nucleosides obtained against herpes simplex virus type 1 (HSV-1) has been elucidated. All compounds show a low cytotoxicity in the cell culture Vero E6. 4,5,6-Trifluoro-1-(β-d-ribofuranosyl)benzimidazole and 5-methoxy-4,6-difluoro-1-(β-d-2′-deoxyribofuranosyl)benzimidazole proved to inhibit completely the progression of the virus cytopathic effect (CPE) at a multiplicity of infection (MOI) of 0.01 PFU/cell.

\\\\expert2\\nbo\\Synthesis\\2016, v. 48. p.394-406.pdf
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   C 51


    Chemoenzymatic Synthesis of Modified 2′-Deoxy-2′-fluoro-β-d-arabinofuranosyl Benzimidazoles and Evaluation of Their Activity Against Herpes Simplex Virus Type 1 / M. I. Kharitonova, K. V. Antonov, I. V. Fateev, M. Ya. Berzina, S. K. Kotovskaya, V. N. Charushin // Synthesis (Germany). - 2017. - Vol. 49, № 5. - С. 1043-1052

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHEMOENZYMATIC SYNTHESIS -- BENZIMIDAZOLES -- HERPES SIMPLEX VIRUS TYPE 1
Аннотация: 1-(2′-Deoxy-2′-fluoro-β-d-arabinofuranosyl)benzimidazoles containing 4,6-difluoro-, 4,5,6-trifluoro-, 5-fluoro-6-methoxy-, and 5-methoxy-4,6-difluorobenzimidazole fragments were synthesized by using purine nucleoside phosphorylase-catalyzed chemoenzymatic approach. As expected, enzymatic synthesis of nucleosides proceeds in lower yields of target compounds in comparison with the synthesis of ribo- and 2′-deoxyribobenzimidazoles (40–55% vs 60–90%). The compounds obtained were tested against the herpes simplex virus type 1, by using the Vero E6 cells. 5-Methoxy-4,6-difluoro-1-β-d-(2′-deoxy-2′-fluoroarabinofuranosyl)benzimidazole did not show any antiviral activity, when used in nontoxic concentration. All other nucleosides proved to exhibit a selective antiherpes activity. In contrast, it was shown that benzimidazole-β-d-arabinofuranosides of both di- and trisubstituted derivatives, having substituents in positions 4–6 of the benzene ring, as well as unsubstituted compounds, cannot be synthesized by enzymatic transglycosylation. 1-(β-d-Arabinofuranosyl)benzimidazole was obtained through glycosylation of N-trimethylsilylbenzimidazole with 1-chloro-2,3,5-O-methoxymethyl-d-arabinose. The behavior of this compound, as inhibitor of purine nucleoside phosphorylase (PNP) E. сoli, was investigated. 1-(β-d-Arabinofuranosyl)benzimidazole was found to belong to a mixed type of inhibitors of PNP. This fact explains why all attempts to perform enzymatic arabinosylation of 4,6-di-, 5,6-di-, and 4,5,6-trisubstituted benzimidazoles failed

\\\\expert2\\NBO\\Synthesis\\2017, v. 49(5), p. 1043-1052.pdf
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   C 75


    Construction of Heteroacenes with Fused Thiophene and Pyrrole Rings via the Fischer Indolization Reaction [Electronic resource] / R. A. Irgashev, A. A. Karmatsky, G. L. Rusinov, V. N. Charushin // Organic Letters. - 2016. - Vol. 18, № 4. - С. 804-807

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
FUSED THIOPHENE -- PYRROLE RINGS -- FISCHER INDOLIZATION REACTION
Аннотация: A convenient approach to ladder-type 6H-benzo[4',5']thieno[2',3':4,5]thieno[3,2-b]indoles, e.g., I (X-rays single crystal structure shown), bearing various substituents in both terminal benzene rings has been developed. The protocol suggested for prepg. these N,S-heteroacenes is based on using easily available reagents, such as cinnamic acids and arylhydrazines, which can be involved in the Fischer indole synthesis, as the key step. A similar condensed system of 12H-benzo[4'',5'']thieno[2'',3'':4',5']thieno[2',3':4,5]thieno[3,2-b]indole, bearing six rings, has also been obtained.

\\\\expert2\\nbo\\Organic Letters\\2016, v.18, N 4, p.804-807,pdf.pdf
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   D 44


    Deprotonation of pyrazole and its analogs by aqueous copper acetate in the presence of triethylamine / M. A. Yakovleva , E. V. Kushan, N. S. Boltacheva, V. I. Filyakova, S. E. Nefedov // Russian Journal of Inorganic Chemistry (Zhurnal Neorganicheskoi Khimii). - 2012. - Vol. 57, № 2. - С. 181-192

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SECONDARY BUILDING UNITS -- MAGNETIC-PROPERTIES -- COORDINATION POLYMERS
Аннотация: Deprotonation reactions of pyrazole and its analogs by aqueous copper acetate in benzene at room temperature in the presence of triethylamine were studied. Unlike 3,5-dimethylpyrazole, more acidic pyrazole, 5-methyl-3-trifluoromethylpyrazole, and 3,5-bis(trifluoromethyl)pyrazoles are deprotonated to give pyrazolate bridges. The structural features of the obtained compounds are discussed based on X-ray diffraction data

\\\\Expert2\\nbo\\Russian Journal of Inorganic Chemistry\\2012, v. 57, N. 2, p.181-192.pdf
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10.

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   D 53


    Diastereoselective reactions of 1,1,1-trichloro(trifluoro)-3-nitrobut-2-enes with 2-morpholinoalk-1-enes [Electronic resource] / V. Yu. Korotaev, A. Yu. Barkov, P. A. Slepukhin, M. I. Kodess, V. Ya. Sosnovskikh // Mendeleev Communications. - 2011. - Vol. 21, № 2. - P112-114. - Bibliogr. : p. 114 (12 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of (E)-1,1,1-trichloro(trifluoro)-3-nitrobut-2-enes with 3,3-dimethyl-2-morpholinobutene in benzene give (4R*,6R*)-6-tert-butyl-3-methyl-6-morpholino-4-trihalomethyl-5,6-dihydro-4H-1,2-oxazine 2-oxides. In a dichloromethane solution, these cyclic nitronates undergo diastereoselective ring opening to produce nitroalkylated anti-CCl3- and syn-CF3-enamines, which are hydrolysed with dilute HCl to afford the respective anti-CCl3- and syn-CF3-g-nitroketones

\\\\Expert2\\nbo\\Mendeleev Communications\\2011, v.21, p.112.pdf
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11.

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   F 70


    Fluoroarenes in the synthesis of benzoannulated nitrogen-containing heterocycles [Electronic resource] / A. A. Layeva, E. V. Nosova, G. N. Lipunova, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 5. - P947-984

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Methods for the synthesis of fluoro-containing benzazoles and benzazines from fluoroarenes (fluoroanilines, fluorobenzoic acids, fluoroacetophenones, fluorophenols, etc.) are described. The potentialities of the most important synthons are considered. Ways of constructing hetero- cycles with fluorine atoms in the annulated benzene fragment are discussed

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (5), 947.pdf
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12.

Инвентарный номер: нет.

   F 98


    Fused polycyclic nitrogen-containing heterocycles. 21. Condensation of 4-hydroxy-3,5-diphenyl-2-phenyliminothiazolidine with 5-fluoro-4-morpholino- and 4-(4-methylpiperazino)-1,2-phenylenediamines [Electronic resource] / V. A. Mamedov, N. A. Zhukova, T. N. Beschastnova, A. A. Balandina, A. T. Gubaidullin, S. K. Kotovskaya, Sh. K. Latypov, Ya. A. Levin, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2009. - Vol. 58, № 1. - P203-211

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The condensation of 4-hydroxy-3,5-diphenyl-2-phenyliminothiazolidine with 5-fluoro-4-morpholino- and 5-fluoro-4-(4-methylpiperazino)-1,2-phenylenediamines leads to region-isomeric thiazolo[3,4-a]quinoxalines differing in substituents in positions 7 and 8 of the benzene ring. From the ratio of isomers formed it follows that the mesomeric effect of a fluorine atom in 1,2-phenylenediamines is comparable with the influence of an aminosubstituent

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 58 (1), 203-211.pdf
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13.

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   K 46


    Kinetic resolution of heterocyclic amines by reaction with optically active acid chlorides. The effect of reaction conditions on the diastereoselectivity of acylation of (±)-3-methyl-2,3-dihydro-4H-1,4-benzoxazine [Electronic resource] / V. P. Krasnov, G. L. Levit, M. A. Koroleva, I. M. Bukrina, L. Sh. Sadretdinova, I. N. Andreeva, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 6. - P1253-1256

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The influence of the reaction conditions (solvent, base) on the diastereoselectivity of acylation of (±)-3-methyl-2,3-dihydro-4H-1,4-benzoxazine with (S)-naproxen and N-tosyl-(S)-proline chlorides was studied. The highest diastereoselectivity was observed for the reaction carried out in benzene in the presence of aliphatic tertiary amines

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (6), 1253.pdf
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14.

Инвентарный номер: нет.

   N 52


    New derivatives of fluorine-containing phenazines / T. I. Filyakova, V. I. Filyakova, A. Ya. Zapevalov, M. I. Kodess, P. A. Slepukhin, V. I. Saloutin, V. N. Charushin // Mendeleev Communications. - 2017. - Vol. 27. - P290-292

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1,2-Epoxyperfluorocyclohexane reacts with 3,3’,4,4’-tetraaminobiphenyl (1 : 1 mol / mol) to give 4-(6,6,7,7,8,8,9,9-octafluoro- 6,7,8,9-tetrahydrophenazin-2-yl)benzene-1,2-diamine whose structure was determined by X-ray crystallography. Reactions of the latter with 1,2-epoxyperfluorocyclohexane or benzil bring about new fluorinated phenazine derivatives.

\\\\Expert2\\NBO\\Mendeleev Communications\\2017 v.27 p.290-292.pdf
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15.

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   N 52


    New examples of chelating triketone-like ligands that promote formation of binuclear complexes [Electronic resource] / A. V. Pestov, L. A. Khamidullina, V. Ya. Sosnovskikh, P. A. Slepukhin, I. Puzyrev // Polyhedron. - 2016. - Vol. 106. - С. 75-83

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
cHROMAN-4-ONES -- TRIKETONE-LIKE LIGANDS -- BINUCLEAR COMPLEXES
Аннотация: The present work is to investigate of binding properties of chelating triketone-like ligands, which are able to forming of binuclear complexes. The studied compounds are able to exist in cyclic or 'close form' (phenyl substituted or unsubstituted 2-hydroxy-2-(trifluoromethyl)chroman-4-ones) as well as in their associated 'open form' (phenyl substituted or unsubstituted 1,1,1-trifluoro-4-(2-hydroxyphenyl)butan-2,4-diones). In this paper there is good evidence for the compounds are being in solid in 'close form' (pre-ligands), whereas in basic solutions and when involved in metal ion coordination sphere they are being in 'open form' (ligands). Protolytic equilibria of the compounds in aqueous ethylene glycol solutions were studied. Schemes of acid-base equilibria of these compounds were proposed. Apparent ionization constants of compounds containing electron-donor and electron-acceptor substituents in the benzene ring were determined using spectrophotometric method. The binding properties of 1,1, 1-trifluoro-4-(2-hydroxyphenyl)butan-2,4-dione towards Cu(II), Ni(II) and Co(II) were studied. The formation of 2:2 metal-ligand complexes was observed. X-ray analysis gives evidence the formation of complexes in which the ratio metal to ligand can be 1:2 and 2:2. Similar to beta-triketones the studied ligands tends to formation of binuclear complexes with transition metal ions

\\\\expert2\\NBO\\Polyhedron\\2016, v.106, p.75-83.pdf
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16.

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   O-57


    One-Pot Synthesis and Asymmetric Oxidation of 2-Nitro-4-(Trifluoromethyl)Benzene Containing Sulfides / K. S. Rodygin, S. A. Rubtsova, A. V. Kutchin, P. A. Slepukhin // Phosphorus, Sulfur, and Silicon and the Related Elements. - 2011. - Vol. 186, № 9. - С. 1885-1894

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRIFLUOROMETHYL -- SULFIDES -- SULFOXIDES
Аннотация: An efficient one-pot method for the preparation of 2-nitro-4-(trifluoromethyl)benzene containing sulfides from 1,1?-disulfanediylbis[2-nitro-4-(trifluoromethyl)benzene] is proposed. The corresponding enantiomerically enriched sulfoxides with up to 78% enantiomeric excess are prepared by the asymmetric oxidation of sulfides using a modified Sharpless method. The yield of sulfoxides is shown to decrease with an increase in the bulk of the aliphatic group and with a decrease of the inductive effect of the hydrocarbonic moiety on the sulfur atom.????Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file??

\\\\Cserver\\dist\\НБО\\Электронная библиотека_Библиогр1\\Phosphorus, Sulfur, and Silicon and the Related Elements\\2011, V. 186, № 9, P. 1885.pdf
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17.

Инвентарный номер: нет.

   P 41


    Pentanuclear pivalate Ni(II) and Co(II) clusters: Modulation of molecular structures and magnetic properties // Journal of Molecular Structure. - 2003. - Vol. 656, № 1-3. - P207-224

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CLUSTER -- MAGNETIC PROPERTIES -- TRANSITION METAL
Аннотация: Reaction of nickel cluster Ni9(HOOCCMe3) 4(?4-OH)3(?3-OH) 3(?n-OOCCMe3)12 (1) or cobalt pivalate polymer [Co(OH)n(OOCCMe3)2-n] x (7) with bis[3,5-(dimethylpyrazolyl)]-1,2,4,5-tetrazine (3) in MeCN solution was found as a result in the formation of isostructural pentanuclear clusters of composition M5(?3-OH) 2(?-OOCCMe3)4(?-N,N?,N? -3,5-Me2C3HN2C2(O)N 4)4(MeCN)2 (M = Ni (4), Co (8)) with a planar spirane metal core. Reaction of cobalt complex 7 with 3 in benzene gives rise to a pentanuclear cluster Co5(?3-OH)2(?-OOCCMe 3)4(?-N,N?,N?-3,5-Me2C 3HN2C2(O)N4)4(C 5N2H8)2 (9), containing coordinated pyrazole molecules as terminating ligands instead of labile MeCN ligands in 8. The reaction of cluster 8 with 2,6-diaminopyridine (T = 85 °C) in MeCN results in the substitution of MeCN ligands and formation of a new cluster Co5(?3-OH)2(?-OOCCMe3) 4(?-N,N?,N?-3,5-Me2C3HN 2C2(O)N4)4(C5H 7N3)2 (10) with two 2,6-diaminopyridine ligands instead of MeCN molecules. The reactions of 4 and 8 with NiCl 2·6H2O in MeCN/EtOH solution (3: 1) give rise to isostructural ferromagnetic pentanuclear chloro-bridged clusters M 5(?3-OH)2(?-CI)2(? -OOCCMe3)2(?-N,N?,N?-3,5-Me 2C3HN2C2 (O)N4) 2(?-N,N?,N?,O-3,5-Me2C3HN 2C2(O)N4)2(MeCN)2 (M = Co (11), Ni (12)). The reaction of 8 with solid COCl2·6H 2O in MeCN results in new seven-nuclear ferromagnetic cluster CO 5(?3-OH)2(?-CI)2(? -OOCCMe3)2(?-N,N?,N?-3,5-Me 2C3HN2- C2(O)N4) 2(?-N,N?,N?,O-3,5-Me2C3HN 2C2(O)N4)2(MeCN) 2[Co(CH3CN)CI2]2 (13). The molecular structures of 4, 8, 9, 10, 12 and 13 established by X-ray diffraction studies and magnetic behavior of new nickel and cobalt pivalate clusters are discussed.

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18.

Инвентарный номер: нет.



    Polyaromatic hydrocarbon (PAH)-based aza-POPOPS: synthesis, photophysical studies, and nitroanalyte sensing abilities / M. S. I. Mohammed, I. S. Kovalev, N. V. Slovesnova [et al.] // International journal of molecular sciences. - 2023. - Vol. 24, № 12. - P10084
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZA-POPOPS -- CLICK REACTIONS -- CHEMOSENSORS
Аннотация: 1,4-Bis(5-phenyl-2-oxazolyl)benzene (POPOP) is a common scintillation fluorescent laser dye. In this manuscript, the synthesis of 2-Ar-5-(4-(4-Ar'-1H-1,2,3-triazol-1-yl)phenyl)-1,3,4-oxadiazoles (Ar, Ar' = Ph, naphtalenyl-2, pyrenyl-1, triphenilenyl-2), as PAH-based aza-analogues of POPOP, by means of Cu-catalyzed click reaction between 2-(4-azidophenyl)-5-Ar-1,3,4-oxadiazole and terminal ethynyl-substituted PAHs is reported. An investigation of the photophysical properties of the obtained products was carried out, and their sensory response to nitroanalytes was evaluated. In the case of pyrenyl-1-substituted aza-POPOP, dramatic fluorescence quenching by nitroanalytes was observed.

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19.

Инвентарный номер: нет.

   R 30


    Reactions of 3-alkylsulfanyl-2-arylazo-3-(1-azacycloalk-1-yl)acrylonitriles with maleimide [Electronic resource] / N. P. Belskaia, A. V. Koksharov, T. G. Deryabina, O. S. Eltsov, P. A. Slepukhin, V. A. Bakulev // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 4. - P833-837 : рис., табл.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of 2-arylazo-3-(1-azacycloalk-1-yl)-3-methylsulfanylacrylonitriles with male-imide in benzene gave octahydropyrrolo[3,4-a]pyrrolizines 2a-c, decahydro-2,7a-diaza-cyclopenta[a]indene 2e, and decahydro-5-oxa-2,7a-diazacyclopenta[a]indene 2f as a result of 1,3-dipolar cycloaddition. In a similar reaction with 3-allylsulfanyl-2-arylazo-3-(1-azacycloalk-1-yl)acrylonitriles 3, dipolar cycloaddition and intramolecular cyclization competed to give a mixture of compounds 2 (major products) and 1,4,6,7,8,8a-hexahydropyrrolo[2,1-c]-1,2,4-triazines 4b-d, 1,6,7,8,9,9a-hexahydro-4H-pyrido[2,1-c]-1,2,4-triazine 4e, and 1,4,6,7,9,9a-hexahydro-1,4-oxazino[3,4-c]-1,2,4-triazine 4f (minor products)

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (4), 833-837.pdf
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20.

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    Single-crystal x-ray diffraction studies in a series of 5-pentafluorophenyl-2,2'-bipyridines and their fused analogs / M. V. Varaksin, E. S. Starnovskaya, D. S. Kopchuk [и др.] // Russian journal of general chemistry. - 2020. - Т. 90, № 2. - P235-237
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
6-ARYL-5-PENTAﬂUOROPHENYL-2,2'-BIPYRIDINES -- LIGANDS -- SINGLE-CRYSTAL X-RAY DIFFRACTION ANALYSIS -- STRUCTURAL EFFECT
Аннотация: Structure of three 6-aryl-5-pentafluorophenyl-2,2'-bipyridines has been studied by means of single-crystal X-ray diffraction analysis. The effect of some functional fragments on the structural organization of compounds, in particular, donor and acceptor substituents in the aryl moiety, as well as annulated benzene and cyclopentane rings on the molecular structure and crystal packing of pentafluorophenyl-modified 2,2'-bipyridine ligand systems has been analyzed.

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