Oxidation of Cyclohexene in Acetic Anhydride (I).-The influence of acetic auhydride on the oxidation of cyclohexene was first observed in oxidations carried out under pressure. Cyclohexene, containing azo-bis-isobutyronitrile, was heated at 60'for several hours under 2 to 3 atmospheres of oxygen pressure. Very little oxygen was absorbed and most of the cyclohexene was recovered. Under similar conditions, the use of a solution of ...