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 Найдено в других БД:Каталог книг и продолжающихся изданий (10)Каталог препринтов УрО РАН (1975 г. - ) (1)Труды Института высокотемпературной электрохимии УрО РАН (5)Труды сотрудников Института теплофизики УрО РАН (2)Труды сотрудников Института химии твердого тела УрО РАН (46)Расплавы (1)Публикации Черешнева В.А. (2)Публикации Чарушина В.Н. (58)Каталог библиотеки ИЭРиЖ УрО РАН (5)
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1.
Инвентарный номер: нет.
   

   
    (E)-1,1,1-trifluoro-4-phenyl-but-2-ene-4-one and trimethyl phosphite [Text] / V. G. Ratner, E. Lork, K. I. Pashkevich, G. -V. Roeschenthaler // Journal of Fluorine Chemistry. - 2000. - Vol. 102, № 1-2. - P73-77
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The interaction of (E)-1,1,1-trifluoro-4-phenyl-but-2-ene-4-one (1) with trimethyl phosphite affords in a [4 + 1] cycloaddition the 1,2?5-oxaphospholene 2 as a sole product which upon hydrolysis is transformed into the fluoroalkyl containing ?-ketophosphonate 4. When the reaction is carried out in the presence of small mounts of water, in addition to 2 as a main product, the phosphoric acid ester 6 of the enolic dimer of ketone 1 is also formed. The molecular structure of compound 6 (monoclinic P 2(1)/c with a = 2088.60(2), b = 1403.1(3), c = 1613.8(1) pm, ? = 90, ? = 100.97(1), ? = 90°, Z = 8) was determined, indicating two independent molecules with (RR) and (SS) configuration and disordered CF3 groups.????

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2.
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    3,3,3-Trifluoro-N-(3-trifluoromethylphenyl)-1,2-propanediamine and its N-mono-and N,N-dicarboxyethyl derivatives: synthesis, protolytic and complexation properties [Electronic resource] / V. Yu. Korotaev, Yu. A. Skorik, A. Yu. Barkov, M. I. Kodess, A. Ya. Zapevalov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 11. - P2545-2549
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 3,3,3-Trifluoro-N-(3-trifluoromethylphenyl)-1,2-propanediamine (5) was synthesized by the reaction of 2-diazo-1,1,1-trifluoro-3-nitropropane or 3,3,3-trifluoro-1-nitropropene with 3-aminobenzotrifluoride followed by the reduction of the nitro group. The Michael 1,4-addition of diamine 5 to acrylic acid occurs only at the N(1) atom and affords N-mono-or N,N-dicarboxyethyl derivatives 6 and 7, depending on the reactant ratio. Protolytic equilibria 5–7 in aqueous solutions were studied by pH-potentiometry and UV spectroscopy. Only the aliphatic amino group can be protonated in an aqueous solution, while the aromatic amino group remains unprotonated even in 12 M HCl. The stability constants of transition metal (Cu2+, Ni2+, Zn2+) complexes with ligands 5–7 were determined by pH-potentiometric titration. The stability of the complexes and selectivity of the ligands toward Cu2+ ions increase with an increase in the number of N-carboxyethyl groups

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (11), 2545.pdf
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3.
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    5-(Methylidene)barbituric acid as a new anchor unit for dye-sensitized solar cells (DSSC) [Electronic resource] / R. A. Irgashev, G. A. Kim, G. L. Rusinov, V. N. Charushin // ARKIVOC. - 2014. - Vol. 2014, №5. - С. 123-131. - Bibliogr. : p. 131 (14 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ANCHOR GROUP -- BARBITURIC ACID -- CARBAZOLE
Аннотация: Novel dyes bearing a 5-(methylidene)barbituric acid moiety as a new acceptor/anchor fragment were obtained and exhibited remarkable photophysical properties, according to a preliminary assessment of their sensitization activity as elements for dye-sensitized solar cells

\\\\expert2\\nbo\\ARKIVOC\\2014, p.123-131.pdf
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4.
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   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.
   
   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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6.
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    Abnormal push-pull benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores in planarized intramolecular charge transfer (PLICT) state: Synthesis, photophysical studies and theoretical calculations / O. S. Taniya, V. V. Fedotov, L. K. Sadieva [et al.] // Dyes and Pigments. - 2022. - Vol. 204. - Ст. 110405
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The combination of excellent luminescence with high solvent polarity effect and aggregation induced emission (AIE) is an ideal combination for creating fluorophores/probes with high microenvironmental sensitivity. However, many push-pull chromophores of the D−A type in common intramolecular charge transfer (ICT) state with a significant solvatochromic effect and AIE activity, have poor luminescent properties. Herein, to overcome this problem by using reactions of nucleophilic aromatic hydrogen substitution (SNH), we have designed a series of novel 4-heteroaryl-substituted 2-aryl-2H-benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores possessing a planarized intramolecular charge transfer (PLICT) state. All these fluorophores exhibited high luminescence quantum yields (up to 60%) and large Stokes shift values of up to 7459 cm−1. Among them, the fluorophore 4h was found to exhibit the most pronounced positive solvatochromic effect and the probe 4f exhibited the most pronounced aggregation induced emission characteristics. This AIE behavior was further confirmed by means of time-resolved fluorescence lifetime measurements as well as DFT-assisted geometry optimization studies. In the presence of trifluoroacetic acid (TFA) compound 4h exhibited a well-pronounced acidochromism via visible color change from yellow-green to orange which returned to the original yellow-green solution after the addition of triethylamine (TEA). The Stern-Volmer constant for the probe 4h towards TFA was 38 M−1. Finally, for the compounds 4f, g, h theoretical calculations in the ground and excited states in different solvents were carried out to confirm the PLICT process. Based on all above the herein reported PLICT fluorophores 4a-h can be successfully applied as biological probes and optical switches.

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7.
Инвентарный номер: нет.
   
   A 18

   
    Acid-base properties and prototropic tautomerism of isomeric 1,2,4-triazin-3- and -5-ones [Electronic resource] / I. V. Khabibulina, R. E. Trifonov, A.P. Volovodenko, M. S. Eremenkova, O. N. Chupakhin, V. L. Rusinov, G. V. Zyryanov, V. A. Ostrovskii // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2004. - Vol. 40, № 3. - P426-430. - Bibliogr. : p. 430 (40 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ACID -- BASE -- TRIAZINE DERIVATIVE -- AQUEOUS SOLUTION
Аннотация: The acidity and basicity constants of isomeric phenyl(aryl)-1,2,4-triazin- 3- and -5-ones in aqueous solution were determined by spectrophotometry: pK a = 7.3-6.2; pKBH+ = 0.1 to -2.2. 1,2,4-Triazin-3-ones are weaker bases than the corresponding 1,2,4-triazin-5-ones. According to the AM1 calculations, the most thermodynamically favorable tautomer in the gas phase is the oxo form: namely, 2H-tautomers of the neutral bases and 2,4-H,H +-tautomers of the conjugate acids.

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2004, 40 (3), 426.pdf
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8.
Инвентарный номер: нет.
   
   A 18

   
    Acid-promoted direct C-C coupling of 1,3-diazines and 1,2,4-triazines with aryl-containing macrocyclic compounds and their open-chain analogues [Text] / N. A. Itsikson, D. G. Beresnev, G. L. Rusinov, O. N. Chupakhin // ARKIVOC. - 2004. - № 12. - P6-13. - Библиогр. : с. 12 (13 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method of direct C-C coupling of azahetarenes with macrocycles (calix[4]arene, benzo-12-??crown-4, 1,5-bis(2,6-dimethylphenoxy)-3-oxapentane), based on the nucleophilic addition to ??unsubstituted carbon atom in azines, has been developed.

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9.
Инвентарный номер: нет.
   
   A 19

   
    Acylative kinetic resolution of racemic heterocyclic amines with (R)-2-phenoxypropionyl chloride / S. A. Vakarov [и др.] // Tetrahedron: Asymmetry . - 2016. - Vol. 27, № 24. - С. 1231-1237. - Bibliogr. : p. 1236-1237 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
HETEROCYCLIC AMINES -- BENZOXAZINES -- 2-METHYLINDOLINE -- KINETIC RESOLUTION
Аннотация: The acylative kinetic resolution of racemic heterocyclic amines such as 3,4-dihydro-3-methyl-2H-[1,4]benzoxazines, 3,4-dihydro-3-methyl-2H-[1,4]benzothiazine, 2-methyl-1,2,3,4-tetrahydro-quinolines and 2-methylindoline with enantiopure (R)-2-phenoxypropionyl chloride has been studied. It has been found that acylation of 3,4-dihydro-3-methyl-2H-[1,4]benzothiazine proceeds with the best stereoselectively when compared with other racemic amines. An efficient method for the preparation of (S)-3,4-dihydro-3-methyl-2H-[1,4]benzothiazine (99.4% ee) via a kinetic resolution protocol was developed. The possibility of recycling (R)-2-phenoxypropionic acid has been demonstrated.

\\\\expert2\\NBO\\Tetrahedron Asymmetry\\2016, v. 27, p.1231.pdf
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10.
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    Acylative kinetic resolution of racemic methyl-substituted cyclic alkylamines with 2,5-dioxopyrrolidin-1-yl (R)-2-phenoxypropanoate / D. A. Gruzdev, S. A. Vakarov, M. A. Korolyova [et al.] // Organic & biomolecular chemistry. - 2022. - Vol. 20, № 4. - P862-869
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The diastereoselective acylation of a number of racemic methyl-substituted cyclic alkylamines with active esters of 2-phenoxypropanoic acid was studied in detail. The ester of (R)-2-phenoxypropanoic acid and N-hydroxysuccinimide was found to be the most selective agent. The highest stereoselectivity was observed in the kinetic resolution of racemic 2-methylpiperidine in toluene at −40 °C (selectivity factor s = 73) with the predominant formation of (R,R)-amide (93.7% de). To explain the observed stereoselectivity, DFT modelling of the transition states in the reactions of the title acylating agent with 2-methylpiperidine and 2-methylpyrrolidine was performed. The calculated values were in good agreement with experimental data. It has been demonstrated that the acylation proceeds via a concerted mechanism, in which the addition of an amine occurs simultaneously with the elimination of the hydroxysuccinimide fragment. The high stereoselectivity of the (R,R)-amide formation is largely ensured by the lower steric hindrances in the transition states as compared to the formation of (R,S)-amide.

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