1: 72 percent / 36percent w/w hydrogen peroxide / acetic acid / 6 h / steam-bath 2: 87 percent / 2. PbO2 / 1. THF, r.t., 3h; 2. benzene 3: 2. PbO2 / 1. THF, r.t., 3h; 2. benzene View Scheme

hydrogenchloride T=150 - 160°C;