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21.
Lamberov A. A. Levin O. V. Egorova S. R. Evstyagin D. A. Aptikasheva A. G. 《Russian Journal of Applied Chemistry》2003,76(3):351-357
The method of low-temperature adsorption of nitrogen was applied to study structural characteristics of commercial peptized aluminum hydroxides. An increase or decrease in the porometric volume, depending on the nature and concentration of the peptizing agent, was analyzed. The phenomena observed are explained in terms of the mechanism suggested for formation of the pore system in commercial aluminum hydroxides. The dependence of the physicomechanical properties of active aluminum oxide on synthesis conditions and texture characteristics of commercial aluminum hydroxides was studied. 相似文献
22.
L. B. Naumova L. A. Egorova A. A. Slivinskaya 《Russian Journal of Applied Chemistry》2006,79(2):236-240
The influence exerted by modifying additives of inorganic nature on the hydrophilicity of peats from the Orlovskoe deposit in Tomsk oblast and on their thermal stability was studied. The acid-base, equilibrium, and kinetic properties of the starting peat samples and those modified with solutions of iron(III) and aluminum chlorides were examined. Their physicochemical parameters were determined: total exchange capacity, acidity by acid and basic groups, relative humidity, distribution coefficients, effective diffusion coefficients, and activation energy. The effect of modifying cations on the thermal decomposition of peat was analyzed. 相似文献
23.
Sharutin V. V. Sharutina O. K. Senchurin V. S. Egorova I. V. Ivanenko T. K. Petrov B. I. 《Russian Journal of General Chemistry》2003,73(2):202-203
Pentaphenylantimony and -phosphorus react with arylmercury chlorides in toluene at room temperature to give diaryl derivatives of mercury in yields of up to 95%. The reactions of pentaphenylantimony and -phosphorus with silicon and tin halides involve arylation of the latter in yields of up to 79%. The products of the reaction of pentaphenylphosphorus with triphenylbismuth dihalides are tetraphenylphosphorus halides, triphenylbismuth, and halobenzene. 相似文献
24.
A. P. Novikova N. M. Perova L. G. Egorova E. I. Bragina 《Chemistry of Heterocyclic Compounds》1991,27(6):666-668
2-Amino-5-aryl(pyridyl)-6H-1,3,4-thiadiazines ana isomeric 2-hydrazino-4-aryl(pyridyl)thiazoles, the ratio of which depends on the reaction conditions, were obtained by the reaction of substituted phenacyl bromides and bromoacetylpyridines with thiosemicarbazide.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 843–846, June, 1991. 相似文献
25.
Sharutin V. V. Sharutina O. K. Egorova I. V. Ivanenko T. K. Bel'skii V. K. 《Russian Journal of General Chemistry》2002,72(1):44-45
The reaction of triphenylbismuth dichloride with sodium fluoride in acetone leads to formation of triphenylbismuth difluoride in 73% yield. The X-ray diffraction data show that the bismuth atom in the two symmetrically independent molecules of bismuth difluoride has a trigonal-bipyramidal coordination with equatorial fluorine atoms. The Bi-F and Bi-C distances are 2.53(1)-2.59(1) and 2.10(3)-2.22(2) Å, respectively, and the FBiF angle is 175.1(5)°. 相似文献
26.
B. M. Krasovitskii N. P. Egorova L. Sh. Afanasiadi I. V. Lysova V. K. Polyakov S. V. Tsukerman 《Chemistry of Heterocyclic Compounds》1982,18(5):461-465
A number of new organic luminophores was synthesized by PO olefination from 2- (4-bromomethylphenyl)-5-phenyloxazole and -1,3,4-oxadiazole and various heterocyclic aldehydes that contain a furan ring. The absorption and fluorescence spectra of the products in toluene, as well as their scintillation characteristics, were measured. The effect of the electronic nature of the substituents on the spectral-luminescence properties of the luminophores is discussed.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 617–621, May, 1982. 相似文献
27.
V. A. Sedavkina V. A. Morozova A. Yu. Egorova R. G. Savkin 《Russian Chemical Bulletin》1995,44(10):1914-1916
Treatment of 5-alkyl-3H-furan-2-ones and 5-alkyl-3H-thiophen-2-ones with dichlorocarbene under conditions of phase-transfer catalysis at 20–90 °C results in insertion of the carbene at the C=C bond followed by skeletal rearrangement.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1995–1997, October, 1995. 相似文献
28.
A. A. Muslinkin I. D. Neklesova M. A. Kudrina N. V. Egorova I. S. Iraidova V. B. Loginov 《Russian Chemical Bulletin》1973,22(4):853-855
Conclusions The reaction of chlorophos and its analogs with the acid chlorides of the acrylic, methacrylic and-fluoroacrylic acids gave some new unsaturated compounds that possess fungicidal action.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 883–886, April, 1973. 相似文献
29.
5-Alkyl(aryl)-3-arylidene-3H-pyrrolin-2-ones were synthesized by ammonolysis of their O-heteroanalogs or by the reactions of 5-alkyl(aryl)-3H-pyrrolin-2-ones with aromatic aldehydes. The structures of the compounds obtained were confirmed by 1H NMR spectra. 相似文献
30.
Ravil I. Khusnutdinov Tatyana M. Egorova Rishat I. Aminov Yulia Yu. Mayakova Ekaterina S. Mescheryakova 《合成通讯》2020,50(4):564-570
AbstractFeCl3·6H2O-catalyzed Ritter amidation of deltacyclene and hexacyclic norbornadiene dimers containing both a double bond and a three-carbon ring in the molecule with acetonitrile and water was performed. Depending on the hydrocarbon structure, the reaction proceeds via C-C bond cleavage in the three-carbon ring or at the double bond to form the corresponding N-acetamides. 相似文献