The kinetic regularities, products, and mechanism of the thermal decomposition of dimethyldioxirane. The contribution of molecular and radical reaction channels

被引：9
作者：
Khursan, SL [1 ]
Grabovskii, SA [1 ]
Kabal'nova, NN [1 ]
Galkin, EG [1 ]
Shereshovets, VV [1 ]
机构：
[1] Russian Acad Sci, Ufa Res Ctr, Inst Organ Chem, Ufa 450054, Russia
来源：
RUSSIAN CHEMICAL BULLETIN | 2000年 / 49卷 / 08期
关键词：
dimethyldioxirane; thermolysis; kinetics; reaction mechanism;
D O I：
10.1007/BF02495074
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The products and kinetics of the thermal decomposition of dimethyldioxirane (DMDO) were studied. The reaction proceeds via three parallel pathways: isomerization to methyl acetate, oxygen atom insertion into the C-H bond of a solvent molecule (acetone), and the solvent-induced homolysis of the O-O bond in the DM DO molecule. The contribution of the latter reaction channel is cn. 23% at 56 degrees C. The overall kinetic parameters of DMDO thermolysis in oxygen atmosphere were determined. The free radical-induced DMDO decomposition occurs in an inert atmosphere. The formal kinetics of this reaction was investigated. The mechanism of the DMDO thermolysis is discussed.
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收藏
页码：1338 / 1348
页数：11
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