sodium hydroxide in methanol 3 h; Heating;

Multi-step reaction with 2 steps 1: 0.41 g / acetic acid / 26 h / 80 °C2: 1.) N-methylmorpholine N-oxide, osmium tetroxide; 2.) p-toluenesulfonic acid / 1.) t-butyl alcoho-THF-water (10.10:1), r.t., 18 h; 2.) CHCl3, r.t., 1 h