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Isatines react with 3,4-dihydro-2 H -(1,3)thiazolo(3,2- a )(1,3,5)triazin-6(7 H )-ones to give their isatinylidene derivatives, which add azomethinylide, generated in situ from paraformaldehide and sarcosine, to yield bis-spirocoupled derivatives of pyrrolidine. The (3+2) dipolar cycloaddition...
Reactions of 1-(2,4-dinitrophenyl)pyridinium chloride and 2-(2,4-dinitrophenyl)isoquinolinium chloride with 2,3-dimethylbenzothiazolium iodide in hot pyridine allows introduction of an aryl residue into the thiazole ring via intermolecular transformation of the pyridine ring of Zincke’s salts...
Reaction of bis(methoxy-NNO-azoxy)methane with formaldehyde in ethanol gives 3-ethoxy-2,2-bis(methoxy- NNO -azoxy)propan-1-ol as a minor product along with target 2,2-bis(methoxy- NNO -azoxy)ethanol. The structure of the former was confirmed by the counter synthesis and X-ray diffraction analysis.
Activity and selectivity of supported Ni, Pt, and Pd catalysts were studied in the liquidphase reductive amination of cyclohexanone at temperatures ranging from 100 to 150 °C. The catalyst 20% Ni/SiO 2 is most active and selective providing a maximum yield of cyclohexylamine. The influence of...
Density functional PBE/TZ2p quantum chemical calculations of activated complexes and pathways of model catalytic transformations of propane under the action of aluminum chloride-cobalt chloride ionic bimetallic complexes were carried out. The formation of an intermediate with a broken C-C bond...
Under electrocatalysis conditions, the perfluoroalkylation of α-methylstyrene by the nickel complex NiBr 2 bipy proceeds with the formation of dimeric products of addition of perfluoroalkyl radicals to the double bond.
The results of studying the possibility of using DART spectrometry with a time-of-flight mass analyzer to confirm the elemental composition of heterocyclic compounds are presented. The method makes it possible to rapidly determine the molecular weight and to calculate the empirical formula of...
Methyl 3-amino-4-arylaminothieno(2,3- b )pyridine-2-carboxylates containing various substituents in the benzene ring were synthesized by the Thorpe-Ziegler reaction of 4-arylamino-2-chloropyridine-3-carbonitriles with methyl thioglycolates. The influence of the substituent in the benzene ring,...
Nitrosonium hexachlorostannate (NO) 2 (SnCl 6 ) was synthesized by the reaction of NOCl and SnCl 4 in CH 2 Cl 2 . According to the single-crystal X-ray diffraction analysis data, the structure of (NO) 2 (SnCl 6 ) consists of cations NO + and octahedral anions (SnCl 6 ) 2− arranged as ions in...
An efficient catalytic method of the cycloaddition to C 60 fullerene of the diazoacetates, containing substituents of diverse structures in ester groups, in the presence of a Pd-based three-component catalyst was developed. An influence of nature and the structure of substituent in the ester...
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