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1.
G. N. Rozentsveig V. Yu. Serykh K. A. Chernyshev I. B. Rozentsveig G. G. Levkovskaya L. B. Krivdin 《Russian Journal of Organic Chemistry》2011,47(4):572-576
4-Chloro-N-[2,2-dichloro-1-(4-methoxyphenyl)-2-phenylethyl]benzenesulfonamide reacted with thiourea on heating in DMF in the presence
of sodium carbonate to give 5-(4-methoxyphenyl)-4-phenyl-1,3-thiazole-2-amine. A probable reaction scheme includes cyclization
of the initial N-dichloroethyl amide to N-sulfonyl-2,3-diaryl-2-chloroaziridine which undergoes isomerization with opening of the three-membered ring to 1-arylsulfonylamino-2-chloro-2-(4-methoxyphenyl)-1-phenylethene.
The subsequent heterocyclization in the reaction with thiourea is accompanied by aromatization via elimination of the arenesulfonamide
fragment. 相似文献
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Fedyushin P. A. Serykh A. A. Vinogradov A. S. Mezhenkova T. V. Platonov V. E. Nasyrova D. I. Samigullina A. I. Fedin M. V. Zayakin I. A. Tretyakov E. V. 《Russian Chemical Bulletin》2022,71(8):1670-1678
Russian Chemical Bulletin - A method was developed for the synthesis of perfluoro-1,1′:4′,1″-terphenyl by the reaction of chloroperfluorobenzene with zinc dust followed by the... 相似文献
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V. Yu. Serykh G. G. Levkovskaya A. V. Popov V. I. Potkin S. K. Petkevich A. V. Vashchenko V. I. Smirnov I. B. Rozentsveig 《Russian Journal of Organic Chemistry》2016,52(10):1475-1480
2-Amino-4-(2,2-dichlorovinyl)-1,3-thiazole reacted with highly electrophilic N-(2,2-dichloro-2-phenylethylidene)- and N-(2,2,2-trichloroethylidene)arenesulfonamides through the exocyclic amino group to give products of nucleophilic addition to the azomethine bond, N-[2,2-di(or 2,2,2-tri)chloro-1-(1,3-thiazol-2-ylamino)ethyl]arenesulfonamides in good yields. Intramolecular heterocyclization of the latter afforded N-[3-(2,2-dichloroethyl)-6-phenylimidazo[2,1-b][1,3]thiazol-5-yl]arenesulfonamides. 相似文献
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A. I. Serykh N. A. Sokolova V. Yu. Borovkov V. B. Kazansky 《Reaction Kinetics and Catalysis Letters》2000,41(5):688-695
The state of nickel cations in NiNaY zeolite subjected to thermal vacuum and oxidative-reductive treatment was analyzed using
diffuse reflectance IR spectra of molecular hydrogen, CO, and hydroxy groups. In a sample dehydrated at 570 K, nickel forms
oxide particles, which are presumably located in big cavities of a zeolite. Heating of the sample at 670 K results in decomposition
of the oxide with the participation of hydroxy groups followed by the formation of stabilized Ni2+ cations in large cavities of the zeolite. Calcination of NiNaY zeolite in a hydrogen atmosphere at 730 K leads to Ni2+ cation reduction to the metal state and to the formation of acidic hydroxy groups. Nevertheless, Ni2+ cations can be regenerated by reoxidation of the reduced sample with oxygen at 670 K and further evacuation at 870 K. Thermal
destruction of NiO in the reoxidized sample also proceeds on acidic hydroxy groups, but the temperature of this process is
higher than the temperature of oxide decomposition in the initial NiNaY zeolite. The IR spectra of molecular hydrogen complexes
with Ni2+ cations were observed for the first time. A considerable decrease in the H-H stretching vibration frequency for the coordinated
molecules (up to 210 cm’1) can be explained by electron density redistribution between a hydrogen molecule and the cation
in the complex 相似文献
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G.?N.?Rozentsveig A.?I.?Fedotova V.?Yu.?Serykh K.?A.?Chernyshev I.?B.?RozentsveigEmail author 《Russian Journal of Organic Chemistry》2012,48(4):481-484
Depending on the reactant ratio, dithiooxamide (ethanedithioamide) reacted as N-nucleophile or N,N′-binucleophile with highly
electrophilic aldimines, N-(2,2,2-trichloroethylidene)- and N-(2,2-dichloro-2-phenylethylidene)arenesulfonamides, to give the corresponding mono- or bis-adducts, N-[2-polychloro-1-(arylsulfonylamino) ethyl]ethanedithioamides or N,N′-bis[2-polychloro-1-(arylsulfonylamino)ethyl]ethanedithioamides, in good yield. 相似文献
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A. R. Kaliev V. Yu. Serykh I. B. Rosentsveig 《Russian Journal of Organic Chemistry》2017,53(8):1191-1194
Reaction of N-(2,2,2-trichloroethylidene)- or N-(1-phenyl-2,2-dichloroethylidene)arenesulfonamides with acetone cyanohydrin in acetone in the presence of potassium carbonate led to the formation of N- (2,2,2-trichloro-1-cyanoethyl)- or N-(2-phenyl-2,2-dichloro-1-cyanoethyl)arenesulfonamides. 相似文献