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Pavlov A.V.,Applied Chemistry Russian Research Center | Veretennikov E.A.,LLC LLC | Laskin B.M.,Applied Chemistry Russian Research Center | Egorov A.G.,Research Institute of Synthetic Rubber
Russian Journal of Applied Chemistry

Benzylidene condensation of R-tetrazol-1-ylphenylamines with 4-fluorobenzaldehyde was studied. The correlation between the logarithm of the rate constant of the condensation of 4-fluorobenzaldehyde with R-tetrazol-1-ylphenylamines and their pK BH+ values was found. The reaction constant ρ in the Hammett equation was determined. © 2013 Pleiades Publishing, Ltd. Source

Kipnis M.A.,RAS Topchiev Institute of Petrochemical Synthesis | Samokhin P.V.,RAS Topchiev Institute of Petrochemical Synthesis | Bondarenko G.N.,RAS Topchiev Institute of Petrochemical Synthesis | Volnina E.A.,RAS Topchiev Institute of Petrochemical Synthesis | And 4 more authors.
Russian Journal of Physical Chemistry A

The peculiarities of methanol transformation on the surface of perfluorinated copolymer, fluoroplastic, containing sulfo groups were studied. At temperatures of 70-120°C, the polymer was established to have high initial activity during the conversion of methanol into dimethyl ether; this reaction was, however, accompanied by strong water sorption that leads to a rapid drop in the activity. The sorption/desorption processes were characterized by temperature effects such as heating during sorption and cooling during desorption. The structure of the polymer in the salt (sodium cations) and acid (hydrolyzed polymer) forms was studied by IR spectroscopy. H 3O +SO 3 - ionic pairs were found to be present in the acid form. © 2011 Pleiades Publishing, Ltd. Source

Timofeev A.F.,Applied Chemistry Russian Research Center | Bazanov A.G.,Applied Chemistry Russian Research Center | Zubritskaya N.G.,Applied Chemistry Russian Research Center
Russian Journal of Organic Chemistry

The kinetics of formation of tetrahydrofuran from dibutyl succinate were studied. The mechanism of catalytic hydrogenation of dialkyl succinates was found to involve consecutive formation of ?-butyrolactone, butane-1,4-diol, and tetrahydrofuran. Parameters of kinetic equations that properly describe the system of concurrent and consecutive reactions were determined. © 2010 Pleiades Publishing, Ltd. Source

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