Hydrogen-transfer reactions from phenols to TEMPO prefluorescent probes in micellar systems

被引：42

作者：

Aliaga, Carolina ^{[1
]}

Juarez-Ruiz, Juan M. ^{[2
]}

Scaiano, J. C. ^{[2
]}

Aspee, Alexis ^{[1
]}

机构：

[1] Univ Santiago Chile, Fac Quim & Biol, Santiago, Chile

[2] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada

来源：

ORGANIC LETTERS | 2008年 / 10卷 / 11期

关键词：

D O I：

10.1021/ol800446c

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A nitroxide prefluorescent probe has been used to evaluate local reactivity of antioxidants in micellar systems. An apparent rate constant that directly reflects the relevance of antioxidant hydrophobicity on the reaction toward nitroxide radicals has been defined. Dramatic increases in this parameter for quercetin are shown on moving from methanol to micellar media: 90 and 230 fold enhancements for SDS and Triton X100 micelles, respectively. This is a clear consequence of the favorable partition of reactants in the micelles.

引用

页码：2147 / 2150

页数：4

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