42 Result(s)
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Article
Study of changes in valence state of chromium in aluminum-chromium catalysts under the influence of aliphatic imino compounds by the EPR method
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The EPR method was used to study the change in the valence state of chromium in aluminum-chromium catalysts u...
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Article
Stereochemistry of isomeric transformations of N-benzylideneallylamines
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Article
Complexing of aliphatic imino compounds with chromium (III) salts
Employing photocolorimetric methods it was shown that, in aqueous solutions, aliphatic imines form complexes with chromium (III) salts in a 4∶1 ratio.
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Article
Unsaturated amines Communication 12. Problem of the heteroaromatization of aliphatic imines
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Alkylideneallylamines in the presence of aluminum-potassium and aluminum -chromium-potassium catalysts, and a...
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Article
Unsaturated amines Communication 13. Properties and catalytic transformations of 1,3,5-triallyl-2,4,6-trimethylhexahydro-sym-triazine
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The condensation of acetaldehyde with allylamine gave 1,3,5-triallyl-2,4,6-trimethylhexahydrosym-triazine in ...
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Article
Unsaturated amines Communication 14. Stereochemistry of isomeric transformations of N-allylimines
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When benzylidene- and alkylideneallylamines are heated in contact with oxide catalysts the C=C bond undergoes...
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Article
Unsaturated amines
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The pathways of the decomposition of aliphatic-aromatic imines under the action of electron impact were deter...
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Article
Unsaturated amines
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Over aluminum-potassium and aluminum-chromium-potassium catalysts at 250–350°C, N-arylideneallylamines isomer...
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Article
Structure of sulfonyl dinitromethylides
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In order to determine the structure of the sulfur dinitromethylides
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Article
Synthesis and structure of nitro derivatives of pentane. Communication 1. 3-fluoro and 3-nitro derivatives of 1,5-difluoro-1,1,3,5,5-pentanitropentane
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1,5-Difluoro-1,1,3,3,5,5-hexanitropentane and 1,3,5-trifluoro-1,1,3,5,5-pentanitropentane have been prepared.
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Article
Synthesis and structure of nitro derivatives of pentane. Communication 2. 1,1,1,3,5,5,5-Heptanitropentane and its 3-fluoro and 3-chloro derivatives
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The compound 1,1,1,3,5,5,5-heptanitropentane has been prepared, and from this, 3-fluoro-1,1,1,3,5,5,5-heptani...
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Article
Two modifications of 1,1,1,3,5,5,5-heptanitro-3-azapentane
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X-ray diffraction structural analysis and quantum-chemical analysis of the two crystalline modifications of 1...
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Article
Synthesis and structure oe cis-3,4-oxolanediol dinitrate
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Cis-3,4-oxolanediol dinitrate was obtained by the O-nitration of the corresponding glycol using the HNO3-H2SO
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Article
Structural and electronic parameters of some cyclic nitramines
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X-ray diffraction strctural analyses were repeated for 1,3,3,5,7,7-hexanitro-1,5-diazacyclooctane and the β f...
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Article
Structure of 5-methyl- and 5,5-dimethyl-2,8-dioxa-3,4,6,7-tetraaza-3,6-nonadiene 4,6-dioxide
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The structures of 5-methyl- and 5,5-dimethyl-2,8-dioxa-3,4,6,7-tetraaza-3,6-nonadiene 4,6-dioxide have been e...
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Article
Synthesis and structure of o-bis(2-fluoro-2,2-dinitroethyl)-nitromethyl ester of 2′-fluoro-2′, 2′-dinitroethyl-2″-fluoro-2″-nitroethylenecarboxime
The product of conversion of O-bis(2-fluoro-2,2-dinitroethyl)nitromethylbis(2′-fluoro-2′,2′-dinitroethyl)carboxime in methanol or ether is O-bis(2-fluoro-2,2-dinitroethyl)nitromethyl-2′-fluoro-2′,2′-dinitroeth...
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Article
1,1,4,4-Tetranitrobutane-2,3-diol and its derivatives. 1. Reaction of dinitromethane potassium salt with glyoxal. Crystal structure of 1,1,4,4-tetranitrobutane-2,3-diol and its diacetate
The synthesis of 1,1,4,4-tetranitrobutane-2,3-diol has been carried out via the reaction of the dinitromethane potassium salt with glyoxal, at pH values of 7–8 after reagent mixing and 5.5 at the end of the re...
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Article
1,1,4,4-tetranitrobutane-2,3-diol and its derivatives. 2. Chlorination and bromination of 1,1,4,4-tetranitrobutane-2,3-diol. crystal structure of halogen derivatives of 1,1,4,4-tetranitrobutane-2,3-diol
The bromination of 1,1,4,4-tetranitrobutane-2,3-diol in 60% acetic acid gave 1,4-dibromo-1,1,4,4-tetranitrobutane-2,3-diol in satisfactory yield. The chlorination of 1,1,4,4-tetranitrobutane-2,3-diol under ana...
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Article
1,1,4,4-Tetranitrobutane-2,3-diol and its derivatives. 3. Synthesis of 1,4-dichloro- and 1,4-dibromo-1,1,4,4-tetranitrobutane-2,3-diol dinitrates and their crystalline structure
1,4-Dichloro- (1) and 1,4-dibromo-1,1,4,4-tetranitrobutane-2,3-diol dinitrates (2) were synthesized by nitration of the corresponding diols with a mixture of trifluoroacetic anhydride and nitric acid. The x-ra...
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Article
Elimination reactions of N,C-difluorides
Hydrogen fluoride was eliminated from N,C-difluorinated derivatives of bis(polynitroalkyl)amines by the action of alkanols. Previously unreported α-fluoropolynitroalkylaldimines were obtained.
