119951-85-8Relevant academic research and scientific papers
Kinetic studies of acenaphthene oxidation catalyzed by N-Hydroxyphthalimide
Opeida,Litvinov,Kushch,Kompanets,Shendrik
, p. 515 - 524 (2013)
The acenaphthene oxidation with molecular oxygen in the presence of N-hydroxyphthalimide (NHPI) has been investigated. It is shown that the main oxidation product is acenaphthene hydroperoxide. The phthalimide-N-oxyl (PINO) radical has been generated in situ from its hydroxyimide parent, NHPI, by oxidation with iodobenzenediacetate. The rate constant of H-abstraction (k H) from acenaphthene by PINO has been determined spectroscopically in acetonitrile. The kinetic isotope effect and the activation parameters have also been measured. On the basis of the results of our studies and available published literature data, a plausible mechanism for the oxidation process of acenaphthene with dioxygen catalyzed by NHPI was discussed.
Acenaphthene Oxidation in the Presence of Tetraethylammonium and Tetrabutylammonium Perchlorates
Opeida,Zalevskaya,Vasil'ev
, p. 328 - 335 (2007/10/03)
Liquid-phase oxidation of acenaphthene in the presence of tetraethylammonium and tetrabutylammonium perchlorates proceeds with chain initiation by degenerate branching through 9-acenaphthyl hydroperoxide the secondary hydroxide that is the main reaction product. In addition, 9-acenaphthenone, 9-acenaphthenol, and acenaphthenequinone are formed as the main reaction products. A simulation of this process showed that the perchlorate catalysis was weakened in the course of oxidation because of deactivation of the perchlorates. The rate of molecular decomposition of the hydroperoxide is higher than that of radical decomposition by a factor of 2 to 3. The initiation rate constant in the catalysis with tetrabutylammonium perchlorate is six times as high as that with tetraethylammonium perchlorate.
Oxidation of cumene and acenaphthene by oxygen in the presence of tetraalkylammonium perchlorates
Opeida,Zalevskaya
, p. 524 - 529 (2007/10/03)
Tetraalkylammonium perchlorates catalyze oxidation of cumene and acenaphthene by oxygen. The perchlorates are more stable in these reactions than halides with the same cations. The perchlorate-initiated decomposition of hydroperoxides depends on the structure of the latter: secondary acenaphthyl hydroperoxide reacts with perchlorates more readily than does tertiary cumyl hydroperoxide. 1996 MAEe Cyrillic signΚ Hayκa/Interperiodica Publishing.
CATALYSIS OF THE OXIDATION OF ACENAPHTHENE BY TETRAETHYL AND TETRABUTYL AMMONIUM HALIDES
Opeida, I. A.,Zalevskaya, N. M.,Vasil'yev, A. Yu.
, p. 535 - 543 (2007/10/03)
A liquiud-phase oxidation of acenaphthene in the presence of tetraethyl and tetrabutyl ammonium halides proceeds with chain initiation via degenerate branching on a secondary hydroperoxide-acenaphthyl-9-hydroperoxide (AHP-9).In the series of salts investigated, change in the cation had virtually no effect on the activity of the salt, while variation in the anion indicates that, under identical oxidation conditions (a constant concentration of the catalyst and acenaphthene and a constant reaction time), the degree of conversion of the hydrocarbon increases in the order iodidebromidechloride with an almost identical selectivity of the reaction with respect to the hydroperoxide formed.When halides of quaternary ammonium salts are used, oxidation begins to develop actively from almost the first minutes, and in most cases the maximum rate of the reaction is rapidly attained.The selectivity of the process with respect to the hydroperoxide depends on the conditions and varies in a wide range (from 5 to 70percent).
