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Article
Study of the Features of the Reaction of Arylcyclopropanes with Nitrozonium Ethyl Sulfate or Nitrozonium Tetrafluoroborate
The reactions of diaryl-, aryl-, and alkyl–arylcyclopropanes with ethyl nitrite in the presence of sulfur trioxide and sulfur trioxide dioxane complex, as well as the reactions of 1-alkyl-2-arylcyclopropanes w...
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Article
Nitrosylsulfuric acid as a tandem reagent in the synthesis of 3,5-diarylisoxazoles from 1,2-diarylcyclopropanes
It was demonstrated that nitrosylsulfuric acid can be successfully used as a tandem nitrosating and oxidizing agent in the synthesis of 3,5-diarylisoxazoles from 1,2-diarylcyclopropanes. The reaction proceeds ...
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Article
Nitrosylsulfuric acid as an oxidant in the synthesis of 3,5-diarylisoxazoles
By six examples, it was demonstrated that nitrosylsulfuric acid can be successfully used for oxidation of 3,5-diaryl-4,5-dihydroisoxazoles to the corresponding 3,5-diarylisoxazoles. If the starting isoxazoline...
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Article
7-Azabicyclo[2.2.1]heptadienes in electrophilic chalcogenation reactions
Reactions of electrophilic chalcogenation (sulfenylation and selenenylation) of 7-azabicyclo[2.2.1]heptadiene derivatives with electron-withdrawing substituents at the nitrogen atom and the double bond were fo...
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Article
Nitrosation of adamantyl dichlorocyclopropanes as a new approach to adamantyl isoxazoles
Nitrosation of 2-(1-adamantylmethyl)-1,1-dichlorocyclopropane with either adduct NOCl•(SO3) n or nitrosonium tetrafluoroborate gives 3- and 4-(1-adamantylmethyl)-5-chloroisoxazo...
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Article
Nitrosation of 2-aryl-1-bromo-1-fluorocyclopropanes with nitrosonium tetrafluoroborate as an approach to the synthesis of 5-aryl-4-bromo-4-fluoroisoxazolines
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Article
Transformations of gem-dibromoarylcyclopropanes under nitrosation conditions on treatment with NOCl·(SO3) n
The reaction of 2-aryl-1,1-dibromocyclopropanes with adduct NOCl·(SO3) n leading to 3-aryl-5-bromoisoxazoles as a result of nitrosation—heterocyclization of the cyclopropane rin...
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Article
Reaction of unsaturated compounds with the thiobisamine-SOHal2 system
A convenient method for the synthesis of di(β-haloalkyl)sulfides based on the reaction of unsaturated compounds with the thiobisamine-SOHal2 (Hal = Cl, Br) system was created. The reaction proceeds through an ele...
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Article
Two-step synthesis of β-haloalkanesulfonamides from alkenes
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Article
Transformations of gem-dichloroarylcyclopropanes in the reaction with NOCl·2SO3. Synthesis of 3-aryl-5-chloroisoxazoles
Nitrosation with complex NOCl·2SO3 of gem-dichloroarylcyclopropanes containing acceptor substituents in the aromatic ring proceeded chemo- and regioselectively affording 3-aryl-5-chloroisoxazoles in high yields. ...
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Article
Aminosulfenates in the electrophilic addition reactions
The reactions of methyl and ethyl diethylaminosulfenates and ethyl piperidinylsulfenate with cyclohexene and norbornene in the presence of chloro- or bromotrimethysilanes were studied.
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Article
Lewis acids as co-reagents in sulfenylation reactions
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Article
Reactions of cyclopropanes with potassium dihaloiodates
Reactions of potassium dihaloiodates with arylcyclopropanes and polycyclic compounds containing a cyclopropane fragment characterized by different degrees of strain lead to formation of mixed 1,3-halogenation ...
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Article
gem-dichloro(alkyl)cyclopropanes in reactions with NOCl·2SO3: Synthesis of alkyl-5-chloroisoxazoles
Nitrosation of gem-dichloro(alkyl)cyclopropanes with the complex NOCl·2SO3 gave regioisomeric alkyl-5-chloroisoxazoles in high yields; a similar reaction with 1,2-bis(gem-dichlorocyclopropyl)ethane afforded the c...
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Article
Nitrosonium hexachlorostannate: synthesis, crystal structure, and nitrosating activity in the reactions with arylcyclopropanes
Nitrosonium hexachlorostannate (NO)2[SnCl6] was synthesized by the reaction of NOCl and SnCl4 in CH2Cl2. According to the single-crystal X-ray diffraction analysis data, the structure of (NO)2[SnCl6] consists of ...
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Article
Reaction of unsaturated compounds with ethyl benzenesulfenate and trimethylsilyl isothiocyanate
A new method for the synthesis of thiocyanato- and isothiocyanatoalkyl phenyl sulfides by the reaction of unsaturated compounds with ethyl benzenesulfenate and trimethylsilyl isothiocyanate has been suggested....
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Article
Reactions of N,N′-thiobisamines with norbornene in the presence of Me3SiCl
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Article
Ordovician corals of the Siberian and Mongolian basins: Taxonomic diversity, morphogenesis, and occurrence
Taxonomic diversity, structural peculiarities, and occurrence of the Ordovician corals Tabulatoidea, Heliolitoidea, Rugosa, and Cyrtophyllida from the Siberian and Mongolian basins are analyzed. The corals set...
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Article
Evolution of the taxonomic diversity of Mongolian Ordovician-Silurian corals
Changes in the taxonomic diversity of Mongolian Ordovician-Silurian corals (Tabulatoidea, Heliolitoidea, Cyrtophyllida, Rugosa) are analyzed. Evolution of the taxonomic diversity is analyzed in two aspects: qu...
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Article
Δ2-isoxazolines from arylcyclopropanes: III. Phenylcyclopropanes substituted in three-membered ring in reaction with nitrosyl chloride activated with oxides of sulfur(IV, VI)
The reaction of phenylcyclopropanes substituted in the three-membered ring with nitrosyl chloride activated with sulfur(IV, VI) oxides provided in good yield substituted 5-phenylisoxazolines as a mixture of st...
