1: 70 percent / sodium carbonate / methanol; H2O 2: tert-butyl hypochlorite / CH2Cl2 / 3 h 3: 68 percent / diethyl ether / Ambient temperature View Scheme

1: With potassium hydroxide in methanol Lossen rearrangement; 2: With water T=100°C; Lossen rearrangement; 2 h;