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1.
V. Ya. Popkova L. E. Vinogradova L. A. Leites V. K. Osmanov 《Russian Chemical Bulletin》1991,40(10):2075-2078
The reaction of ammonia with 2-chloroperfluoro-1-cyclohexene-1-thiocyanate leads to 2-amino-7-iminoperfluoro-4,5,6-trihydrobenzo-1,3-thiazole (II) due to intramolecular heterocyclization in the Thorpe reaction with the concurrent exoiminization. Analysis of the IR spectra of (II) in CCl4 and in the solid phase indicated that molecules of (II) in the crystal form hydrogen-bonded centrosymmetric dimers (D), which are in equilibrium with free molecules of (II) in solution.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2366–2370, October, 1991.The authors express their gratitude to D. I. Zagorevskii for taking the mass spectrum of (II) and to L. S. German for a useful discussion of this work. 相似文献
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A. A. Ibragimov Z. Osmanov B. Tashkhodzhaev N. D. Abdullaev M. R. Yagudaev S. Yu. Yunusov 《Chemistry of Natural Compounds》1981,17(5):458-463
The proof of the structures of two isomeric alkaloids — nitramine and isonitramine — from two species of plants of the genusNitraria is given. Their diastereoisomerism with respect to the C7 asymmetric atom has been established. This is the first time that alkaloids with the structure of 2-azaspiro[5,5]undecan-7-ol have been found. 相似文献
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A. V. Borisov V. K. Belsky V. K. Osmanov G. N. Borisova Zh. V. Matsulevich 《Chemistry of Heterocyclic Compounds》2006,42(10):1346-1351
Reaction of perfluoro-1-ethyl-2-methyl-1-propenyliminochloromethanesulfenyl chloride with 1-allyl-2-methoxybenzene in methylene
chloride and nitromethane gives as the main products β-and β-chloro sulfides plus derivative of 2,3-dihydrobenzofuran. The
reaction in nitromethane in the presence of lithium perchlorate gave a product of addition of sulfur-containing electrophiles
to the double bond-a derivative of 1,3-thiazolidin-2-one-in preference to the cycloaddition product.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, 1558–1564, October, 2006. 相似文献
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A. V. Borisov Zh. V. Matsulevich V. K. Osmanov G. N. Borisova 《Russian Chemical Bulletin》2013,62(4):1042-1043
A reaction of 2-pyridinetellurium trichloride with unsaturated hydrocarbons leads to [1,3]tellurazolo[3,2-a]pyridinium-4 derivatives — the products of polar cycloaddition of tellurium-containing electrophile at the multiple bond. 相似文献
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Muminov A. T. Muminov T. M. Norboev K. Osmanov B. S. Salikhbaev U. S. Safarov A. N. Skvortsov V. V. Suleymanov R. D. 《Technical Physics》2011,56(9):1345-1352
Scattering of bremsstrahlung electron beam (E
e
= 6.25 MeV) collimated with a vertical divergence δγ ≈ ±60 μrad and incident on the mercury surface at glancing angles α = −37, −83, and −140 μrad is studied on the 118-m-long
path length. The specular reflection effect is detected in the spectral and angular distributions of γ quanta with energies
up to 3 MeV. The reflection coefficients vary from 0 to ∼17% depending on the angles of incidence and the γ quanta energy. 相似文献