O-57 One-Step Heterylation at the Upper Rim of Calix[4]arene with 1,2,4-Triazin-5(2H)-ones [Electronic resource] / D. G. Beresnev, N. A. Itsikson, O. N. Chupakhin, V. N. Charushin, M. I. Kodess, A. I. Butakov, G. L. Rusinov, Yu. Yu. Morzherin, A. I. Konovalov, I. S. Antipin // Journal of Organic Chemistry. - 2006. - Vol. 71, № 21. - P8272-8275 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A convenient way to modify calix[4]arenes based on the direct C-C coupling reaction of their phenol moiety with 1,2,4-triazines has been advanced, and the ability of modified calixarenes to provide transport of La3+ and Ga3+ cations through organic membranes has been examined. ?? \\\\Expert2\\nbo\\Journal of Organic Chemistry\\2006, v.71, N 21, p.8272.pdf |
N 64 Nikitin, E. D. Vapor-Liquid Critical Properties of Phenol and (C8 to C10) Phenylalkanols [Text] / E. D. Nikitin, A. M. Popov, Yu. G. Yatluk // Journal of Chemical & Engineering Data. - 2007. - Vol. 52, № 1. - P315-317 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The critical pressures and temperatures of phenol and three phenylalkanols C6H5(CH2)nOH with n = 2 to 4 have been measured. These substances are thermally unstable at their critical points. The pulse-heating method with ultralow residence times has been used. Residence times are from (0.03 to 1) ms. The experimental critical properties of phenol and phenylalkanols have been compared with the values calculated using the group-contribution methods by Constantinou and Gani and by Marrero and Gani \\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2007, v.52, p.315.pdf |
R 30 Reactions of [2-iodo-3-(perfluoroalkyl)propyl]glycidyl ethers with alcohols under basic conditions [Electronic resource] / D. N. Bazhin, T. I. Gorbunova, A. Ya. Zapevalov, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 11. - P2324-2327. - Bibliogr. : p. 2327 ( ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): GLYCIDYL ETHERS -- ORGANOFLUORINE COMPOUNDS -- OXIRANES -- PHASE TRANSFER CATALYSIS Аннотация: On treatment with sodium alkoxides in the corresponding alcohols, [2-iodo-3-(perfluoroalkyl)propyl]glycidyl ethers are converted into 3-alkoxy-1-[3-(perfluoroalkyl)prop-2-enyloxy]-propan-2-ols in 56-78% yields, while its reaction with 2,2,2-trifluoroethanol and phenol under phase transfer conditions (NaOH, CH2Cl2-H2O, Bu 4N+I-, 35-40 °C) gives 3-alkoxy1-[2-iodo-3- (perfluoroalkyl)propoxy]propan-2-ols (yields 45-72%). \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (11), 2324.pdf |
R 18 Ralph-Matthias Schoth Fluorinated 1,3-diketones, 2-trifluoroacetyl phenols and their derivatives: versatile reactants in phosphorus chemistry [Text] / Ralph-Matthias Schoth , D. V. Sevenard, K. I. Pashkevich // Coordination Chemistry Reviews . - 2000. - Vol. 210, № 1. - P101-134 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
S 98 Synthesis of chelating polymer sorbents by using the S-N(H) methodology / A. V. Pestov, P. A. Slepukhin, Yu. G. Yatluk, V. N. Charushin, O. N. Chupakhin // Journal of Applied Polymer Science . - 2012. - Vol.125, №3. - С. 1970-1978 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): FUNCTIONALIZATION OF POLYMERS -- PHENOL -- X-RAY ANALYSIS Аннотация: The article describes a new synthetic approach to modify the structure of phenol-formaldehyde and resorcinol-formaldehyde resins, which enables one to functionalize a polymer matrix by using the S?NH (nucleophilic aromatic substitution of hydrogen) methodology. Direct heteroarylation of phenol (resorcinol) fragments in polymer chains with 1,2,4-triazine derivatives illustrates a new synthetic method in the polymer chemistry. The feature of this methodology is that it provides an opportunity to accomplish direct one-pot polymer transformations by incorporating of rather complicated chelating groups through the displacement of hydrogen in phenol moieties. It has been shown that in order to obtain chemically modified polymers on the basis of phenol-formaldehyde and resorcinol-formaldehyde resins with a high degree of substitution with chelating units, a polymer matrix has to react with 3-(pyridin-2'-yl)-1,2,4-triazin-5(2H)-one. Also, it has been found that polymer sorbents with a high selectivity can be obtained by using the template method. Targeted synthesis of model compounds, as structural units of the chelating polymers, and elucidation of the structure of their complexes with copper (II) ions have shown that the most plausible type of coordination is formation of the bridge 1 : 1 complexes of the a,a'-bipyridinyl type. |
R 30 Reactions of pyrazinium salts with phenols:from σH-adducts to SN Hproducts and transformations into benzo[b]furans / E. V. Verbitskiy, Yu. A. Kvashnin, P. A. Slepukhin, A. V. Kuchin, G. L. Rusinov, O. N. Chupakhin, V. N. Charushina // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 919-928 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DIHYDROPYRIDINES -- NUCLEOPHILIC SUBSTITUTION -- HYDROGEN Аннотация: The reaction of 5-(het)aryl-2,3-dicyano-1-ethylpyrazinium salts with phenol derivatives affords relatively stable dihydropyrazines, whereas the reactions of 6-(het)aryl-1,2,5-oxadiazolo[3,4-b]pyrazin-4-ium protic salts, depending on the phenol structure, result in products of nucleophilic substitution of hydrogen or open-chain transformation products: benzo[b]furan-substituted derivatives. The crystallographic data on the spatial structure of all types of the synthesized products were obtained \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (5), 919-928.pdf |
S 98 Synthesis, structure and photoluminescent properties of BF2 and BPh2 complexes with N,O-benzazine ligands [Electronic resource] / E. V. Nosova, T. N. Moshkina, G. N. Lipunova, I. V. Baklanova , P. A. Slepukhin, V. N. Charushin // Journal of Fluorine Chemistry. - 2015. - Vol. 175. - С. 145-151. - Bibliogr. : p. 150-151 (29 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): N,O-BIDENTATE LIGANDS -- BPh2 COMPLEXES -- BF2 COMPLEXES Аннотация: Novel N,O-bidentate BF2 and BPh2 complexes have been prepared in good to excellent yields through coordination of 8-hydroxy-2-methylquinolines and 2-(2-hydroxyphenyl)-3H-quinazolin-4-ones with boron trifluoride etherate or triphenylborane under mild conditions. All complexes have been characterized by H-1, B-11 and F-19 NMR, mass-spectrometry and X-ray crystallography data. Some complexes have been found to exhibit a significant fluore.scence in acetonitrile solutions. Electronic and site effects of substituents in both heterocyclic and phenol fragments proved to have a profound impact on quantum yields. \\\\expert2\\nbo\\Journal of Fluorine Chemistry\\2015,V.175, p.145-151.pdf |
C 10 C-H functionalization of triazolo[a]-annulated 8-azapurines [Electronic resource] / E. B. Gorbunov, G. L. Rusinov, E. N. Ulomskii, V. L. Rusinov, V. N. Charushin, O. N. Chupakhin // Tetrahedron Letters. - 2016. - Vol. 57, № 21. - С. 2303-2305 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): FUSED PYRIMIDINES -- C-H FUNCTIONALIZATION -- 8-AZAPURINES Аннотация: Direct C-H functionalization of triazolo[a]-annulated 8-azapurines with phenol ethers or thiophene has been performed using the oxidative nucleophilic displacement of a hydrogen on the pyrimidine ring, proceeding through the intermediacy of the corresponding sigma(H)-adducts. \\\\expert2\\NBO\\Tetrahedron Letters\\2016, v. 57, p. 2303.pdf |
Substituted 2-(2-hydroxyphenyl)–3H-quinazolin-4-ones and their difluoroboron complexes: Synthesis and photophysical properties / T. N. Moshkina, E. V. Nosova, V. N. Charushin [et al.] // Spectrochimica acta part A: molecular and biomolecular spectroscopy. - 2021. - Vol. 252. - P119497 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ESIPT -- FLUORESCENCE -- O-LIGAND -- BF2-COMPLEX2-(2-HYDROXYPHENYL)–3H-QUINAZOLIN-4-ONES Аннотация: 2-(2-Hydroxyphenyl)–3H-quinazolin-4-ones with diverse substituents at phenol ring and their six-membered difluoroboron complexes have been synthesized via few-stage approach. The photophysical properties of target compounds have been investigated in two solvents as well as in the solid state. The nature of substituents and substitution point in the phenol moiety of ligands and resulting BF2-complexes on the photophysical properties of dyes have been explored. The complex bearing two t-Bu groups proved to be the most emissive in solid state, whereas its 5-methoxy and 4-diethylamino counterparts possess strong emission in toluene solution. The dyes exhibited large Stokes shifts which was attributed to excited state intramolecular proton transfer (ESIPT). Additionally, fluorescence of quinazolinones in the mixture of THF/water was studied. All ligands demonstrated emission enhancement with increase of water fraction which was due to aggregation induced emission. |