OXYDATION SELECTIVE EN PARA DES PHENOLS PAR UN COMPLEXE CUIVRIQUE OXYDANT

Article abstract of DOI:10.1016/S0040-4039(00)94154-6

Oxidation of phenols by molecular oxygen in the presence of the μ-oxo cupric catalyst Cu4Cl4O2 (CH3CN)3 (A), can be selectively directed to give either oxidative coupling or para-hydroxylation (p-quinols or p-quinones) products by the choice of the (A)/(phenol) ratio.The mechanism is discussed and a -OH ligand transfer from Cu^II to the phenolic para position is proposed.