Regioselectivity of Hydroxyl Radical Reactions with Arenes in Nonaqueous Solutions
作者:Lee C. Moores、Devinder Kaur、Mathew D. Smith、James S. Poole
DOI:10.1021/acs.joc.8b03188
日期:2019.3.15
The regioselectivity of hydroxylradical addition to arenes was studied using a novel analytical method capable of trapping radicals formed after the first elementary step of reaction, without alteration of the product distributions by secondary oxidation processes. Product analyses of these reactions indicate a preference for o- over p-substitution for electron donating groups, with both favored over
2-(t-Butylazo)prop-2-yl hydroperoxide: a convenient source of hydroxyl radicals in organic media
作者:Richard D. Grant、Ezio Rizzardo、David H. Solomon
DOI:10.1039/c39840000867
日期:——
In the presence of a suitable nitroxide, 2-(t-butylazo)prop-2-ylhydroperoxide (1a) decomposes cleanly into hydroxyl and t-butyl radicals; the rate constant for its disappearance in cyclohexane is given by: k= 9.58 × 1014 exp. (–1.47 × 104/T)s–1.
Reaction of hydroxyl radical with arenes in solution—On the importance of benzylic hydrogen abstraction
作者:Abygail R. Waggoner、Yahya Abdulrahman、Alexis J. Iverson、Ethan P. Gibson、Mark A. Buckles、James S. Poole
DOI:10.1002/poc.4278
日期:2021.12
hydroxyl radicalreactions with alkylarenes was investigated using a nuclear magnetic resonance (NMR)-based methodology capable of trapping and quantifying addition and hydrogenabstraction products of the initial elementary step of the oxidation process. Abstraction products are relatively minor components of the product mixtures (15–30 mol%), depending on the magnitude of the overall rate coefficient