1: N-bromosuccinimide (NBS), benzoyl peroxide (BPO) / CCl4 / 8 h / Heating 2: 1.) AcOK; 2.) 2 N HCl / 1.) AcOH, 8 h, reflux; 2.) reflux, 30 min 3: 97 percent / KMnO4 / acetone; H2O / 1.5 h / Heating 4: 78 percent / KOH / H2O / 2 h / Heating View Scheme

1: N-bromosuccinimide (NBS), benzoyl peroxide (BPO) / CCl4 / 8 h / Heating 2: 1.) AcOK; 2.) 2 N HCl / 1.) AcOH, 8 h, reflux; 2.) reflux, 30 min 3: 97 percent / KMnO4 / acetone; H2O / 1.5 h / Heating View Scheme