1: 4-(N,N-dimethlyamino)pyridine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane / 5 h / 20 °C 2: ammonium acetate; acetic acid / 5 h / Reflux 3: N-bromosuccinmide / acetonitrile / 20 °C 4: N,N-dimethyl-formamide / 80 °C 5: hydrogen; sodium carbonate / palladium 10 on activated carbon / methanol / 2 h / 20 °C 6: 4-(N,N-dimethlyamino)pyridine; p-toluenesulfonyl chloride / dichloromethane / 2 h / 60 °C View Scheme