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Esenbaeva V. V. Yunnikova L. P. Kudayarova T. V. Danilova E. A. 《Russian Journal of General Chemistry》2018,88(12):2691-2694
Russian Journal of General Chemistry - The reactions of tropylium salts with 2,5-diamino-1,3,4-thiadiazol, 3,5-diamino-1,2,4-thiadiazol, and 2,6-diaminopyridine have given novel products of... 相似文献
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B. K. Kasenov Sh. B. Kasenova Zh. I. Sagintaeva M. O. Turtubaeva K. S. Kakenov G. A. Esenbaeva 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2017,91(3):430-436
The heat capacities of nanosized ferro-chromo-manganites LaM0.5 IIFeCrMnO6.5 (MII–Mg, Ca, Sr, Ba) are measured via dynamic calorimetry in the temperature range of 298.15–673 K using an IT-S-400 instrument. It is established that the C°p~f(T) function of LaM0.5 IIFeCrMnO6.5 (MII–Mg, Ca, Sr, Ba) has λ-type effects, due probably to phase transitions of the second order. Considering the temperatures of the phase transitions, equations of the heat capacity of ferro-chromo-manganites LaM0.5 IIFeCrMnO6.5 (MII–Mg, Ca, Sr, Ba) as a function of temperature are derived on the basis of experimental data. Thermodynamic functions Н°(Т)–Н°(298.15), S°(Т), and Ф хх(Т) are calculated in the temperature range of 298.15–675 K. 相似文献
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L.?P.?YunnikovaEmail author V.?V.?Esenbaeva 《Russian Journal of Organic Chemistry》2018,54(7):1018-1022
Tropylium, xanthylium, and tritylium salts characterized by different stabilities differently reacted with biologically active amines. The reactions of tropylium perchlorate and tetrafluoroborate with 4-(cyclohepta-2,4,6-trien-1-yl)aniline was accompanied by hydrolysis of the N-(cyclohepta-2,4,6-trien-1-yl) derivative, the N-xanthenyl derivative underwent dehydrogenation, whereas tritylium perchlorate failed to react with 4-(cyclohepta-2,4,6-trien-1-yl)aniline. The reactions of pyrimidin-2-amine with tropylium, xanthylium, and tritylium salts afforded products of substitution of one hydrogen atom in the amino group with high yields. The N-substituted pyrimidin-2-amine derivatives were stable, and neither their dehydrogenation nor hydrolysis was observed. 相似文献
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Russian Journal of Organic Chemistry - Nicotinic, isonicotinic, and furan-2-carboxylic acid hydrazides reacted with 2 equiv of tropylium perchlorate or tetrafluoroborate to give the corresponding... 相似文献
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Yunnikova L. P. Esenbaeva V. V. Danilova E. A. Islyaikin M. K. 《Russian Journal of Organic Chemistry》2019,55(12):1985-1987
Russian Journal of Organic Chemistry - Reactions of thioxanthylium tetrafluoroborate with pharmacophoric heterocyclic amines, pyrimidin-2-amine, 4,6-dimethylpyrimidin-2-amine,... 相似文献