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排序方式: 共有466条查询结果,搜索用时 171 毫秒
1.
T. V. Tikhomirova O. M. Gruzdeva N. E. Galanin G. P. Shaposhnikov I. G. Abramov 《Russian Journal of General Chemistry》2016,86(4):848-853
4-[(Z)-(R)-Diazenyl]phthalonitriles and cobalt phthalocyanines on their basis are synthesized and their electron absorption spectra are studied. 相似文献
2.
Soldatova A. E. Tsegelskaya A. Yu. Semenova G. K. Bezsudnov I. V. Polinskaya M. S. Abramov I. G. Kuznetsov A. A. 《Russian Chemical Bulletin》2022,71(4):777-786
Russian Chemical Bulletin - The method of one-stage catalytic polycyclocondensation according to the B4 + AB scheme was used to synthesize new tetraarm star-shaped oligoimides (SOIs) with terminal... 相似文献
3.
Zh.?V.?ChirkovaEmail author S.?I.?Filimonov I.?V.?Prituzhalov E.?A.?Vasanov I.?G.?Abramov 《Russian Chemical Bulletin》2017,66(5):882-885
General methods to access new 3-formyl-substituted 1-methoxypyrrolo[3,4-f]indole-5,7-diones were developed. The synthesized 3-formylindoles react with heterocyclic aceto-phenones under acid-catalyzed conditions to give different chalcones. 相似文献
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A general approach to the synthesis of new 3-acetyl-substituted pyrrolo[3,4-f]indole-5,7-diones, 3-[3-(dimethylamino)acryloyl]-1-methoxypyrrolo[3,4-f]indole-5,7-diones and similar indole-5,6-dicarbonitriles has been developed. Dimethylaminoacryloyl derivatives synthesized on their basis regioselectively reacted with hydrazine hydrochlorides and hydroxylamine with the formation of the corresponding 5-substituted azoles. 相似文献
7.
V. V. Azatyan V. M. Prokopenko S. K. Abramov N. N. Smirnov 《Doklady Physical Chemistry》2017,472(1):13-15
It was experimentally shown that the reaction of the combustion of hydrogen–air mixtures in a detonation wave virtually completely (with an accuracy of 1%) occurs by a branched-chain mechanism; it is this mechanism that determines the characteristics of the detonation wave. 相似文献
8.
N. V. Vereshchagina T. N. Antonova G. Yu. Kopushkina I. G. Abramov 《Kinetics and Catalysis》2017,58(3):255-261
The kinetics of the liquid-phase hydrogenation of cyclodienes with various structures (endo-tricyclo[ 5.2.1.02,6]decadiene-3,8 and cis,cis-1,5-cyclooctadiene) by hydrogen over a finely dispersed 1%Pd/C catalyst at atmospheric pressure has been studied. The catalyst provides the possibility for successive saturation of the double bonds of the dienes. The reactivities of the cyclodienes determined by their electron-donating properties have been compared. The solvent nature is the determining factor in the ratio of hydrogen absorption rates in the case of successive saturation of the double bonds of the hydrocarbons. The hydrogenation kinetics of cyclic dienes, including dicyclopentadiene, can be modeled using the Langmuir–Hinshelwood equation when the process is carried out in a perfectly mixed flow reactor. 相似文献
9.
We consider a spectral problem that is nonlinear in the spectral parameter for a self-adjoint vector differential equation of order 2n. The boundary conditions depend on the spectral parameter and are self-adjoint as well. Under some conditions of monotonicity of the input data with respect to the spectral parameter, we present a method for counting the eigenvalues of the problem in a given interval. If the boundary conditions are independent of the spectral parameter, then we define the notion of number of an eigenvalue and give a method for computing this number as well as the set of numbers of all eigenvalues in a given interval. For an equation considered on an unbounded interval, under some additional assumptions, we present a method for approximating the original singular problem by a problem on a finite interval. 相似文献
10.
Bykov M. V. Abramov Z. D. Pakhomova M. V. Borodina T. N. Smirnov V. I. Suslov D. S. 《Journal of Structural Chemistry》2022,63(1):125-139
Journal of Structural Chemistry - The structure of complex [Pd(acac){P(NEt2)3}2]BF4 (I) is determined by XRD. In the crystal structure of I, the coordination sphere of palladium is characterized by... 相似文献