R 30 Reaction of 5-halo-1,2,3-thiadiazoles with aliphatic diamines. Synthesis and intramolecular cyclization of bis(1,2,3-triazolyl-1,2,3-thiadiazolyl)sulfides [Text] / N. N. Volkova, E. V. Tarasov, M. I. Kodess, L. Van Meerlent, W. Dehaen, V. A. Bakulev // Organic and Biomolecular Chemistry. - 2003. - Vol. 1, № 22. - P4030-4038 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Bis[1,2,3]triazolo[1,5-f:5?,1?-b][1,3,6]thiadiazepine and [1,5-g:5?,1?-b][1,3,7]thiadiazocine ring systems have been synthesized from 5-halo-1,2,3-thiadiazoles and aliphatic diamines. We have found that the last step of the process is the cyclization of initially formed bis(1,2,3-triazolyl-1,2,3-thiadiazolyl)sulfides. The structures of the intermediates and products were supported by different NMR spectroscopic methods (1H coupled 13C NMR, 2D HETCOR, HMBC and 1D INADEQUATE experiments) and mass spectrometry. Differences in the reaction pathway for aliphatic and less nucleophilic aromatic diamines were determined. |
T 44 The epithermal gold-telluride Kochbulak deposit (Uzbekistan) [Text] / V. A. Kovalenker, Yu. G. Safonov, V. B. Naumov, V. L. Rusinov // Geology of Ore Deposits. - 1997. - Vol. 39, № 2. - P107-128. - Bibliogr. : p. 128 (42 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DEPOSIT -- EPITHERMAL GOLD-TELLURIDE KOCHBULAK DEPOSIT -- KOCHBULAK DEPOSIT -- VOLCANIC SEQUENCE -- PORPHYRY DIKES Аннотация: The Paleozoic epithermal gold-telluride Kochbulak deposit is situated on the northern slope of the Kurama Range in the central Tien Shan (Uzbekistan). The deposit is located within an andesite-dacite volcanic sequence (C2-3) intruded by subalkaline granodiorite and granosyenite porphyry dikes (C3-P1). The ore-forming system of the deposit originated and evolved during the orogenic uplift associated with aerial volcanism and emplacement of porphyritic granitoids. The Kochbulak deposit contains a great diversity of ore-forming sulfides, sulphosalts, tellurides, and selenides, several of which were first found there. The deposit has features of epithermal mineralization of both the adularia-sericite and acid-sulfate genetic types and mesothermal gold mineralization. The deposit consists of high- and low-angle veins and ore-bearing breccia pipes. The pipe-shaped bodies and veins differ in ore, gangue, and metasomatic mineral assemblages. The ore bodies hosted by explosive-hydrothermal breccias contain goldfieldite, famatinite, luzonite, enargite, diaspore, and pyrophyllite and, therefore, have pronounced features of epithermal mineralization of the acid-sulfate type. The ore veins show evidence of deeper formation and are associated with quartz-carbonate-sericite wall rock alteration. Our study of mineral assemblages, fluid inclusions, sulfur, oxygen, and hydrogen isotopes, and thermodynamic calculations show that the Kochbulak deposit was formed during a cyclic multistage process with periodic alternation of sealing along with tectonic and explosive opening of the fluid channel ways. The ore-forming process is subdivided into the preore, I to III ore, and postore stages related to fracture opening. Three types of solutions took part in the formation of gold-sulfide-sulphosalt-telluride mineralization. They were distinct in temperature, composition, salinity, and proportion of meteoric and magmatic water and other volatile components. The temperature generally decreased from 465°C to <100°C, and slightly increased at the beginning of each stage of the ore-forming process. Pressure, salinity, ion and gas composition of solutions, and the oxygen isotope composition of water varied as well. The deposition of gold-productive mineral assemblages was caused by changes in pH, Eh, activities of S2, O2, and Te2. The recurrence of these changes and repeated mineral deposition within the same depth intervals formed bodies very rich in ore components. The above-mentioned data suggest the Kochbulak deposit represents a particular type of gold-telluride mineralization, which originated within a wide range of physicochemical conditions at hypabyssal to subsurface depths.???? |
T 44 The Aktepe silver-arsenide deposits, Uzbekistan [Text] / V. A. Kovalenker, V. L. Rusinov, A. E. Kabo, J. L. Jambor // Exploration & Mining Geology. - 1995. - Vol. 4, № 2. - P111-119 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ARSENIDE -- GABBRO -- ORE DEPOSITION -- ORE MINERALOGY -- SILVER Аннотация: Ores rich in native silver at the Aktepe orefield near Tashkent, Uzbekistan, are similar to the arsenide-silver ores of the Cobalt-Gowganda region, Canada. The Aktepe ores occur as shoots and lenses in narrow fissures within a middle Paleozoic gabbro massif which is surrounded by Upper Paleozoic felsic volcanics and syenite intrusions. Widespread deuteric propylitization of the massif preceded ore deposition. The ore consists mainly of native silver, which is accompanied by native arsenic and bismuth, allargentum, dyscrasite, acanthite, numerous sulfides and sulfosalts, and by a Ni-Co-Fe arsenide and sulfarsenide assemblage similar to that of Cobalt-Gowganda. The Aktepe gangue minerals are mainly calcite, ferroan dolomite, and chlorite, and the veins are bordered by a wallrock-alteration assemblage of sericite-quartz-carbonate-pyrite. A difference from Cobalt-Gowganda is that the Aktepe carbonates are iron-rich, a feature which is attributed to a genetic relationship with the iron-rich host gabbros. -Authors???? |
O-97 Oxidation of polyfunctional sulfides with chlorine dioxide [Electronic resource] / I. P. Loginova, K. S. Rodygin, S. A. Rubtsova, P. A. Slepukhin, A. V. Kuchin, V. A. Polukeev // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2011. - Vol. 47, № 1. - P124-130 : рис., табл. - Bibliogr. : p. 129-130 (24 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 3-Benzylsulfanyl-4,5-diphenyl-4H-1,2,4-triazole, 5-methylsulfanyl-1-phenyl-1H-tetrazole, 2-methylsulfanyl-1H-benzimidazole, 2-benzylsulfanyl-1H-benzimidazole, and 1-butylsulfanyl-4-nitrobenzene were oxidized to the corresponding sulfoxides with chlorine dioxide using different modes of oxidant supply. The oxidation process was characterized by high chemoselectivity \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2011, 47 (1), 124-130.pdf |
O-57 One-Pot Synthesis and Asymmetric Oxidation of 2-Nitro-4-(Trifluoromethyl)Benzene Containing Sulfides / K. S. Rodygin, S. A. Rubtsova, A. V. Kutchin, P. A. Slepukhin // Phosphorus, Sulfur, and Silicon and the Related Elements. - 2011. - Vol. 186, № 9. - С. 1885-1894 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): TRIFLUOROMETHYL -- SULFIDES -- SULFOXIDES Аннотация: An efficient one-pot method for the preparation of 2-nitro-4-(trifluoromethyl)benzene containing sulfides from 1,1?-disulfanediylbis[2-nitro-4-(trifluoromethyl)benzene] is proposed. The corresponding enantiomerically enriched sulfoxides with up to 78% enantiomeric excess are prepared by the asymmetric oxidation of sulfides using a modified Sharpless method. The yield of sulfoxides is shown to decrease with an increase in the bulk of the aliphatic group and with a decrease of the inductive effect of the hydrocarbonic moiety on the sulfur atom.????Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file?? \\\\Cserver\\dist\\НБО\\Электронная библиотека_Библиогр1\\Phosphorus, Sulfur, and Silicon and the Related Elements\\2011, V. 186, № 9, P. 1885.pdf |
S 98 Synthesis of neomenthylsulfanylimidazoles / M. Ya. Demakova, D. V. Sudarikov, S. A. Rubtsova, P. A. Slepukhin, A. V. Kuchin // Chemistry of Natural Compounds. - 2012. - Vol.47, №6. - С. 899-902 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): L-MENTHOL TOSYLATE -- BENZIMIDAZOLENEOMENTHYL SULFIDES -- IMIDAZOLE OXIDES Аннотация: 2-Neomenthylsulfanyl-1H-imidazole,1-methyl-2-neomenthylsulfanyl-1H-imidazole, and 2-neomenthylsulfanyl-1H-benzimidazole were synthesized |
A 89 Asymmetric oxidation of hetaryl neomenthyl sulfides / M. Ya. Demakova, D. V. Sudarikov, S. A. Rubtsova, P. A. Slepukhin, A. V. Kutchin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2012. - Vol.48, №1. - С. 113-118 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ASYMMETRIC OXIDATION -- SULFIDES Аннотация: Previously unknown diastereoisomeric sulfoxides were synthesized by asymmetric oxidation of 2-neomenthylsulfanyl-substituted 1H-imidazole, 1-methyl-1H-imidazole, and 1H-benzimidazole \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2012, 48 (1), 113-118.pdf |
Synthesis and antioxidant activity of new neomenthyl and caranyl thiotriazoles / Y. V. Gyrdymova, D. V. Sudarikov, S. A. Rubtsova, S. A. Patov, A. V. Kuchin, O. G. Shevchenko, P. A. Slepukhin, F. A. Lakhvich, F. S. Pashkovskii // Chemistry of natural compounds. - 2018. - Vol. 54, № 5. - P883-888 Кл.слова (ненормированные): TRIAZOLES -- NEOMENTHANE AND CARANE SULFIDES Аннотация: New neomenthyl and caranyl thiotriazoles were synthesized in up to 80% yields. Studies of the antioxidant and membrane-protective activity of the synthesized compounds in vitro showed that sulfides with a carane moiety were more active than analogs with a neomenthane substituent. |