Reactivity of Peroxyl Radicals with 5-Methyl-4-[(Propylsulfanyl)methyl]-2,4-Dihydro-3H-Pyrazol-3-one

5-Methyl-4-[(propylsulfanyl)methyl]-2,4-dihydro-3 H -pyrazol-3-one was shown to inhibit the radical-chain peroxidation of 1,4-dioxane, ethylbenzene, and methyl oleate. One peroxyl radical is trapped by each (propylsulfanylmethyl)-substituted 2,4-dihydro-3 H -pyrazol-3-one molecule. The reaction rate...

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Bibliographic Details
Published in:Kinetics and catalysis 2021, Vol.62 (1), p.56-61
Main Authors: Yakypova, L. R., Baeva, L. A., Safiullin, R. L.
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Ethylbenzene
Physical Chemistry
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Summary:5-Methyl-4-[(propylsulfanyl)methyl]-2,4-dihydro-3 H -pyrazol-3-one was shown to inhibit the radical-chain peroxidation of 1,4-dioxane, ethylbenzene, and methyl oleate. One peroxyl radical is trapped by each (propylsulfanylmethyl)-substituted 2,4-dihydro-3 H -pyrazol-3-one molecule. The reaction rate constant of the compound with a peroxyl radical depends on the structure of the latter and decreases in the series: peroxyl radical of 1,4-dioxane, ethylbenzene, and methyl oleate ( k 7 × 10 4 , L mol –1 s –1 , 333 K: 5.7, 4.1, 1.1). The reason for the observed dependence was discussed.
ISSN:0023-1584
1608-3210
DOI:10.1134/S0023158421010134