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1.
O. V. Koryakova V. V. Sattarova D. V. Sevenard O. G. Khomutov K. I. Pashkevich 《Russian Journal of General Chemistry》2003,73(1):141-144
The tautomeric equilibrium in substituted 5,6,7,8-tetrahydroquinazolines was studied by IR spectroscopy. The effect of various substitutents in the pyrimidine ring and the solvent on the state of the tautomeric equilibrium was evaluated. 相似文献
2.
A. N. Nesmeyanov I. B. Zlotina M. A. Khomutov I. F. Leshcheva N. E. Kolobova K. N. Anisimov 《Russian Chemical Bulletin》1977,26(3):642-643
Conclusions The cis-trans isomers of the vinylic fluorine substitution product were isolated and characterized when Na[5-C5H5Fe(CO)2] is reacted with ethyl perfluoromethacrylate.Deceased.The authors express their gratitude to E. M. Rokhlin and U. Utebaev for supplying the ethyl perfluoromethacrylate.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 705–706, March, 1977. 相似文献
3.
Pashkevich K. I. Khomutov O. G. Filyakova V. I. Kuchin A. V. 《Russian Chemical Bulletin》1994,43(6):1002-1003
Russian Chemical Bulletin - Asymmetric polyfluorinated ketones RFCOR are formed by treating various derivatives of (polyfluoro)alkanoic acids (esters, anhydrides, acid chlorides) with lithium... 相似文献
4.
Polyfluoroalkyl-containing aziridinyl ketones, unlike their nonfluorinated analogs, react with hydrogen halides to give only -halo- -anvnoketones or their hydrogen halide salts. Thermal decomposition of the latter in the case where Hal = CI affords -chlorovinyl ketones.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 684–686, March, 1996. 相似文献
5.
T. I. Osipova A. V. Belyankin A. R. Khomutov Yu. N. Zhukov E. N. Khurs R. M. Khomutov 《Russian Chemical Bulletin》1996,45(11):2588-2591
The reaction of ketoximes with hypophosphorous acid resulted in previously unknown -substituted--aminophosphinic acids, which were oxidized into the corresponding -substituted--aminophosphonic acids.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2729–2732, November, 1996. 相似文献
6.
1. | The previously unknown aminooxyalkylcelluloses have been synthesized by alkylation of cellulose with N-substituted -haloalkylhydroxylamines. |
2. | The prepared aminooxyalkylcelluloses are weak ion-exchangers, readily react with many classes of organic compounds, and are stable during storage. |
3. | Methods have been developed for the preparation of aminooxyalkylcelluloses with different lengths of the pendant H2NO group on the polysaccharide framework. |
4. | Sorbents were prepared, based on the aminooxyalkylcelluloses, which contained a covalently bonded coenzyme (pyridoxal-5-phosphate), a substrate (-ketoglutaric acid) and functional groups, able to react with certain functional groups of biopolymers. |
7.
R. M. Khomutov E. S. Severin G. K. Kovaleva N. V. Gnuchev 《Russian Chemical Bulletin》1967,16(8):1743-1745
Conclusions Various O-substituted hydroxylamines were synthesized by the method proposed by us.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1820–1823, August, 1967. 相似文献
8.
Mitchenko S. A. Khomutov E. V. Zhikharev I. V. Beletskaya I. P. 《Kinetics and Catalysis》2002,43(4):475-483
Mechanical treatment of the K2PtCl4 solid salt in a vibrating mill results in Pt–Cl bond heterolysis to form coordinatively unsaturated Pt(II) complexes. At room temperature, the freshly treated K2PtCl4 salt absorbs methyl bromide and evolves methyl chloride to the gas phase. The reaction mechanism involves the following sequence of steps: the oxidative addition of methyl iodide to Pt(II) with the intermediate formation of Pt(IV) methyl complexes and the decomposition of the latter due to intramolecular reductive elimination with methyl chloride formation. The first step of the reaction of MeI with the preactivated surface of the K2PtCl4 salt is assisted by active sites, which are regenerated in each act of the chemical transformation of MeI into MeCl involving in the chain substitution of halogen in methyl iodide. The coordinatively unsaturated surface platinum complexes can act as such active sites. Due to their effective positive charge, they can provide electrophilic assistance to nucleophilic substitution. Chain termination is probably due to the coordination of the complex with a coordination vacancy and an interstitial chloride ion to the inactive K2PtCl4 complex. 相似文献
9.
V. A. Baranov M. A. Baturitskii A. Van der Schaaf N. P. Kravchuk A. S. Korenchenko S. M. Korenchenko N. A. Kuchinskiy P. Robmann V. V. Sidorkin V. S. Smirnov N. V. Khomutov S. N. Shkarovskiy 《Physics of Particles and Nuclei Letters》2012,9(2):168-171
The PEN collaboration carries out a precision measurement of the ??+ ?? e +?? decay branching ratio at the Paul Scherrer Institute (PSI, Switzerland). A special mini time-projection chamber (mTPC) has been developed for registration of particles in the pion beam. The chamber contains 14 × 10?3 g/cm2 of matter on the particle path. The chamber was successfully used during one-year-long run. Design and characteristics of the mTPC are described. 相似文献
10.
Ban G Bodek K Daum M Henneck R Heule S Kasprzak M Khomutov N Kirch K Kistryn S Knecht A Knowles P Kuźniak M Lefort T Mtchedlishvili A Naviliat-Cuncic O Plonka C Quéméner G Rebetez M Rebreyend D Roccia S Rogel G Tur M Weis A Zejma J Zsigmond G 《Physical review letters》2007,99(16):161603
In case a mirror world with a copy of our ordinary particle spectrum would exist, the neutron n and its degenerate partner, the mirror neutron n', could potentially mix and undergo nn' oscillations. The interaction of an ordinary magnetic field with the ordinary neutron would lift the degeneracy between the mirror partners, diminish the n' amplitude in the n wave function and, thus, suppress its observability. We report an experimental comparison of ultracold neutron storage in a trap with and without superimposed magnetic field. No influence of the magnetic field is found and, assuming negligible mirror magnetic fields, a limit on the oscillation time taunn' > 103 s (95% C.L.) is derived. 相似文献