[en] The potassium permanganate oxidation of 2,6-di-tert-butyl-4-methylphenol(1), adsorbed on a stationary Celite phase, gives several interesting monomeric products in low yields. These products were identified primarily by ¹³C and ¹H NMR. The products of oxidation of 1 with performic acid and also with oxygen in alkaline ethanol are related and their structures and NMR spectral features are also discussed