共查询到20条相似文献,搜索用时 15 毫秒
1.
2.
A. P. Avdeenko S. A. Konovalova O. N. Ludchenko O. P. Ledeneva A. V. Vakulenko 《Russian Journal of Organic Chemistry》2011,47(2):214-229
New N-acetyl-1,4-benzoquinone monoimines alkyl-substituted in the quinoid ring were synthesized. The hydrohalogenation of N-acetyl(aroyl)-1,4-benzoquinone monoimines proceeds exclusively in keeping with the 1,4-addition. The hydrochlorination occurs along the ionic mechanism, in the hydrobromination grows the role of the radical mechanism. 相似文献
3.
A. G. Mal''kina V. V. Nosyreva R. N. Kudyakova L. V. Sokolyanskaya B. A. Trofimov 《Russian Journal of Organic Chemistry》2001,37(5):649-654
The reaction of 4-alkyl-4-hydroxy-2-alkynenitriles with hydrogen halides (HCl and HI) in dioxane is accompanied by intramolecular cyclization with formation of 5,5-dialkyl-4-halo-2-imino-2,5-dihydrofuran hydrohalides. Treatment of the latter with K2CO3 in ethanol yields 5,5-dialkyl-4-halo-2-imino-2,5-dihydrofurans. 相似文献
4.
5.
R. A. Gadzhily V. M. Fedoseev R. A. Nadzhafova V. G. Dzhafarov 《Chemistry of Heterocyclic Compounds》1990,26(8):874-876
The reaction of 3-chloropropenyl alkyl ketones or 2,3-dichloropropyl alkyl ketones with 2-substituted ethylamine derivatives leads to the formation of the hitherto unknown 1-(2-R-ethyl)-2-alkylpyrroles.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1047–1049, August, 1990. 相似文献
6.
R. R. Gataullin R. R. Ishberdina A. M. Sotnikov I. B. Abdrakhmanov 《Russian Journal of Applied Chemistry》2005,78(3):438-440
Alkenylation of 6-methyl-2-(2-cyclohexen-1-yl)- and 2-(1-cyclohexen-1-yl)anilines with piperylene in the presence of AlCl3 and transformation of the resulting cyclohexenylanilines into carbazole structures were studied.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 3, 2005, pp. 441–443.Original Russian Text Copyright © 2005 by Gataullin, Ishberdina, Sotnikov, Abdrakhmanov. 相似文献
7.
E. A. Ishmaeva Ya. A. Vereshchagina D. V. Chachkov O. S. Vasil’eva E. S. Ostroglyadov A. A. Nikonorov I. A. Litvinov D. B. Krivolapov A. Z. Alimova V. M. Berestovitskaya 《Russian Journal of General Chemistry》2012,82(5):911-920
Polarity of 2-(1-methylbenzimidazol-2-yl)-1-phenyl- and -1,2-diphenyl-1-nitroethenes was determined and their structure was studied using electronic and 1H, 13C NMR spectroscopy, dipole moments measuring, XRD analysis, and quantum-chemical calculations. It was shown that the 2-(1-methylbenzimidazol-2-yl)-1-nitro-1-phenylethene has Z-configuration both in crystal and solution. The nitro group and benzimidazole substituent in its molecule are removed from the plane of the double bond. For 1,2-diphenyl-1-nitroethene E-structure is typical. 相似文献
8.
9.
Extended use of supported Pt catalysts causes thermal migration of Pt particles to form large agglomerates,thus decreasing the catalytic activity.The combination of Pt with Re protects Pt against migra... 相似文献
10.
11.
12.
1-(2-Naphthyl)dihydro- and 1-(2-naphthyl)-2-thiodihydrouracils were obtained from N-(2-naphthyl)--alanine derivatives. The thiodihydrouracil was converted to a dihydrouracil. Bromination of 1-(2-naphthyl)dihydrouracil gave (1-bromonaphthyl)dihydrouracil. 1-(2-Naphthyl)-2-oxo-, 1-(2-naphthyl)-2-thio-. and 1-(1-bromo-2-naphthyl)-2-oxohexahydro-pyrimidines were obtained.Translated from Khimiya Geterotsiklicheskikh Soedinenii. No. 12, pp. 1695–1697, December, 1971. 相似文献
13.
《Journal of organometallic chemistry》1987,331(1):113-119
The course of palladium-catalyzed oxidation of a terminal alkene by t-BuOOH or by O2/H2O is greatly modified when the allylic carbon bears a p-toluenesulfonyl substituent, and allylic oxidation results. Mechanistic explanations of this observation are proposed. 相似文献
14.
M. G. Voronkov O. G. Yarosh L. V. Shchukina É. É. Kuznetsova 《Russian Chemical Bulletin》1984,33(11):2391-2393
Conclusions The reaction of 2-triethylsilyl-substituted ethyl-, vinyl-, and ethynyltrialkoxysilanes with triethanolamine gave 1-substituted silatranes possessing neurotropic activity.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2611–2613, November, 1984. 相似文献
15.
A series of new 1-(2-arylvinyl)-2-azolyl-1-pyridylethanols-1 has been obtained with various positions of the nitrogen atom
in the pyridine fragment and with substituents in the benzene ring, by the reaction of (2-arylvinyloxiran-2-yl)pyridines with
triazole and imidazole, for agrochemical screening. The compounds mentioned displayed high fungicidal activity.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1167–1174, August, 2007. 相似文献
16.
17.
18.
19.
The refrigerant 1-1-1-2-tetrafluoroethane (R134a) is being phased out in Europe from 2011. This requires the adoption of alternatives, and the mixture of R134a with carbon dioxide (CO(2)) is a promising candidate. However, limited experimental data currently stymie evaluation of its performance in industrial applications. In this paper, we employ atomistic force fields and the configurational-bias Monte Carlo technique to study the vapour-liquid equilibrium of this mixture. We also characterize the microscopic structure of the mixture, which is not readily available from experiments. At 272 K and 11.55 bar, the average coordination number of the first solvation shell of R134a is 11 and that of CO(2) is eight. CO(2) does not alter the structure of R134a, but its structure is slightly changed, due to the presence of R134a. All pair interactions are sensitive to pressure and are more structured at lower pressure. CO(2) prefers to form clusters of two in the mixture and highly extended or percolating clusters are not found. 相似文献