Výsledky vyhledávání - "A. B. Koldobsky"

N-Vinyl-2-(trifluoroacetylethynyl)pyrroles and E-2-(1-bromo-2-trifluoroacetylethenyl)pyrroles: Cross-coupling vs. addition during C H-functionalization of pyrroles with bromotrifluoroacetylacetylene in solid Al2O3 medium. H-bonding control

Autor: Alexander B. Trofimov, Denis N. Tomilin, A. V. Afonin, Maxim D. Gotsko, Dmitri Yu. Soshnikov, Igor A. Ushakov, Boris A. Trofimov, Andrey B. Koldobsky, Lyubov N. Sobenina

Publikováno v: Journal of Fluorine Chemistry. 186:1-6

A topochemical reaction of pyrroles with bromotrifluoroacetylacetylene proceeds in solid Al2O3 at room temperature in two different directions depending on the substituent character at the nitrogen atom. While N-vinylpyrroles undergo the cross-coupli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b98738a685bd8b56e92d247ca09e6de
https://doi.org/10.1016/j.jfluchem.2016.03.012

Zobrazit plný text záznamu

Aluminium oxide-mediated cross-coupling of pyrroles with 1-bromo-2-(trifluoroacetyl)acetylene: a quantum-chemical insight

Autor: Maxim D. Gotsko, A. V. Afonin, Andrey B. Koldobsky, Alexander B. Trofimov, Lyubov N. Sobenina, Igor A. Ushakov, Dmitri Yu. Soshnikov, Nadezhda M. Vitkovskaya, Boris A. Trofimov, Denis N. Tomilin

Publikováno v: Mendeleev Communications. 26:480-482

Cross-coupling of NH-pyrroles with 1-bromo-2-(trifluoroacetyl) acetylene in the Al2O3 medium affords (E)-4-bromo-1,1,1-trifluoro-4-(pyrrol-2-yl)but-3-en-2-ones instead of the expected 2-ethynylated products. Quantum-chemical analysis shows strong int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fabf092a9f8d3127f83a1a0d86871bd9
https://doi.org/10.1016/j.mencom.2016.11.006

Zobrazit plný text záznamu

Double-differential cross sections for the production of neutrons from Pb, W, Zr, Cu, and Al targets irradiated with 0.8-, 1.0-, and 1.6-GeV protons

Autor: G. N. Smirnov, S. V. Mulambetova, Stepan G. Mashnik, R. D. Mulambetov, V. S. Barashenkov, Yu. V. Trebukhovsky, Vyacheslav F. Batyaev, A. B. Koldobsky, Yu. E. Titarenko, K. A. Lipatov, V. M. Zhivun, Harphool Kumawat, Richard E. Prael

Publikováno v: Physics of Atomic Nuclei. 68:3-15

Experimental results obtained by determining the double-differential cross sections for neutron production in Pb, W, Zr, Cu, and Al targets irradiated with 0.8-, 1.0-, and 1.6-GeV protons are presented. The spectra of neutrons were measured at 15°,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::70a7ec4b0e542f97350adbe71f189ed4
https://doi.org/10.1134/1.1858552

Zobrazit plný text záznamu

Experimental and Theoretical Study of the Residual Product Nuclide Yields in 100-2600 MeV Proton-Irradiated Thin Targets

Autor: Yury E. Titarenko, Richard E. Prael, Hideshi Yasuda, V. M. Zhivun, Stepan G. Mashnik, Arnold J. Sierk, Masaki Saito, Vyacheslav F. Batyaev, Svetlana V. Kvasova, E. I. Karpikhin, A. B. Koldobsky, R. D. Mulambetov, V. S. Barashenkov

Publikováno v: Journal of Nuclear Science and Technology. 39:1175-1178

The work is aimed at experimental determining and computer simulating the independent and cumulative yields of residual product nuclei in the target and structure materials of the transmutation facilities driven by high-current accelerators. The ITEP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e73c911fd9ddd3e71399e51960e3492c
https://doi.org/10.1080/00223131.2002.10875311

Zobrazit plný text záznamu

[Untitled]

Autor: V. E. Vakhmistrov, Alexander A. Korlyukov, A. B. Koldobsky, Nikolay P. Tsvetkov, Valery N. Kalinin

Publikováno v: Russian Chemical Bulletin. 51:326-331

Unusual cascade cycloaddition reactions with dimethylhydrazones of α-trimethylsilyloxyalkylacroleins acting as azadienes were found. Depending on the nature of the dienophile, the reactions give either fused heterocyclic compounds (when two consecut

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ca37f3d64eba6ea9c918989499c4638
https://doi.org/10.1023/a:1015468013195

Zobrazit plný text záznamu

Experimental and computer simulation study of the radionuclides produced in thin 209Bi targets by 130 MeV and 1.5 GeV proton-induced reactions

Autor: Mark B. Chadwick, M. Blann, M. M. Igumnov, E. I. Karpikhin, Yu. E. Titarenko, Richard E. Prael, Vyacheslav F. Batyaev, O. V. Shvedov, V.D. Kazaritsky, Stepan G. Mashnik, V. M. Zhivun, T. A. Gabriel, A. B. Koldobsky, R. Michel, A. N. Sosnin

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 414:73-99

The results of experimental and computer simulation studies of the yields of residual product nuclei in Bi-209 thin targets irradiated by 130 MeV and 1.5 GeV protons are presented. The yields were measured by direct high-precision gamma-spectrometry.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90619fb4b0b7707022d6c8ceed34ee7a
https://doi.org/10.1016/s0168-9002(98)00530-0

Zobrazit plný text záznamu

Synthesis and cycloaddition reactions of -substituted acrolein dimethylhydrazones containing an acetal group

Autor: Nikolay P. Tsvetkov, V. E. Vahmistrov, Valery N. Kalinin, Evgenii V. Vorontsov, A. B. Koldobsky

Publikováno v: Russian Chemical Bulletin. 53:233-235

A series of new α-substituted acrolein dimethylhydrazones containing an acetal group were synthesized. These hydrazones react with acrylonitrile or methyl acrylate according to the Diels—Alder reaction pattern to give substituted tetrahydropyridin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::099182fff77a6bce8ce5dd17464a9974
https://doi.org/10.1023/b:rucb.0000024854.07835.fc

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání