The oxidation of trans-decahydronaphthalene (1) was carried out in aceticanhydride with oxygen in the presence of Co(OAc)2, Ce(OAc)3, and NH4Br. Decahydronaphthyl acetates were obtained as main oxidation products in a selectivity of 81 mol% at 120 °C. In addition, relative reactivities of hydrogen atoms of 1 were determined at temperatures from 90 to 120 °C.