RATE CONSTANTS AND ARRHENIUS PARAMETERS FOR THE REACTIONS OF SOME CARBON-CENTERED RADICALS WITH TRIS(TRIMETHYLSILYL)SILANE

被引：98

作者：

CHATGILIALOGLU, C ^{[1
]}

DICKHAUT, J ^{[1
]}

GIESE, B ^{[1
]}

机构：

[1] CNR, ICOCEA, I-40064 OZZANO DELL EMILIA, ITALY

来源：

JOURNAL OF ORGANIC CHEMISTRY | 1991年 / 56卷 / 22期

关键词：

D O I：

10.1021/jo00022a035

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Rate constants for the reactions of some carbon-centered radicals with (Me3Si)3SiH have been measured over a range of temperatures by using competing unimolecular radical reactions as timing devices. For example, the rate constants (at 298 K) are 3.7, 1.4, and 2.6 x 10(5) M-1 s-1 from primary, secondary, and tertiary alkyl radicals, respectively. Comparison of the radical trapping abilities of tri-n-butylstannane and tris(trimethylsilyl)silane is discussed. The use of 1,1-dimethyl-5-hexenyl cyclization as a radical clock has been recalibrated by using new data and data from the literature.

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页码：6399 / 6403

页数：5

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