Title of article
The oxidation of 2-alkoxy-3,6-di-tert-butylphenols. The reversible dimerization of 2-alkoxy-3,6-di-tert-butylphenoxy radicals
Author/Authors
Abakumov، نويسنده , , Gleb A. and Cherkasov، نويسنده , , Vladimir K. and Nevodchikov، نويسنده , , Vladimir I. and Druzhkov، نويسنده , , Nikolai O. and Fukin، نويسنده , , Georgii K. and Kursky، نويسنده , , Yurii A. and Piskunov، نويسنده , , Alexandr V.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2005
Pages
3
From page
4095
To page
4097
Abstract
The oxidation of 2-alkoxy-3,6-di-tert-butylphenols has been studied. It was found that 2-RO-3,6-di-tert-butylphenoxy radicals (R = Et, Pr, Ph) undergo dimerization by C–O coupling. The X-ray structure of 2-ethoxy-3,6-di-tert-butylphenoxy dimer has been determined. Radical dimers dissociate reversibly in solution to give two phenoxy radicals at 200–350 K. By using EPR spectroscopy the equilibrium concentration of the phenoxy radicals, equilibrium constants and ΔH and ΔS of dissociation have been determined.
Keywords
Reversible dissociation , Phenoxy radical , Oxidation , phenol
Journal title
Tetrahedron Letters
Serial Year
2005
Journal title
Tetrahedron Letters
Record number
1845898
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