Chemistry Letters, Vol.32, No.1, 58-59, 2003
Clean synthesis of 3,3',5,5'-tetra-tert-butyl-4,4'-diphenoquinone from the oxidative coupling of 2,6-Di-tert-butylphenol catalyzed by alkali-promoted Cu-Mg-Al hydrotalcites in the presence of molecular oxygen
2,6-Di-tert-butylphenol is selectively transformed to 3,3',5,5'-tetra-tert-butyl-4,4'-diphenoquinotie in the presence of molecular oxygen using alkali-promoted Cu-Mg-Al hydrotalcites as recyclable heterogeneous catalysts.