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- W2013116853 abstract "The mechanism and kinetics of reactions responsible for the loss of donor properties of tetralin (namely isomerization and cleavage of the naphthenic rings), were studied for tetralin and for compounds modelling the oxygen-methylene and methylene bridge bonds in coal organic matter. It was found that thermolysis of highly reactive model compounds (ethers) at temperatures < 350 °C does not initiate these reactions, but instead results in the temporary formation of dimerization products (ditetralyls) or small amounts of the alkylation products. Thermolysis of less reactive compounds (some ethers and especially 1,2-diarylethanes) initiates the formation of methylindane and butylbenzene from tetralin, in amounts that increase with temperature. Kinetic calculations have illustrated that isomerization and cleavage of tetralin depends not only on temperature but also on the thermolysis rate of the initiator and on the nature of the formed radicals. The radicals formed during thermolysis of 1,2-diarylethanes can be arranged in the following series with respect to their ability to initiate tetralin conversions: benzyl > β -naphthylmethylene > α -naphthylmethylene > 9-anthrylmethylene. This series also shows the order of decreasing resonance stabilization energy. Under comparable conditions (410 °C) a linear dependence is observed for a plot of the logarithms of the initiation constants of tetralin isomerization, cleavage, and dehydrogenation, against the resonance stabilization energy of radicals." @default.
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- W2013116853 date "1990-04-01" @default.
- W2013116853 modified "2023-09-26" @default.
- W2013116853 title "Effect of the structure of radicals on the intensity of radical-initiated conversions of tetralin" @default.
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- W2013116853 doi "https://doi.org/10.1016/0016-2361(90)90318-k" @default.
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