Ra-Ni

1: 51 percent / acetic anhydride; p-toluenesulfonic acid / toluene / 0.25 h / 90 °C 2: 62 percent / BF3*Et2O / CH2Cl2 / 3 h / 20 °C 3: 85 percent / Raney nickel / ethanol / 0.5 h / Heating View Scheme

hydrogenchloride; platinum Hydrogenation;

1: Heating 2: NaIO4 3: 61 percent / toluene / Heating 4: 62 percent / BF3*OEt2 5: 85 percent / Ra-Ni View Scheme

1: 180 °C 2: concentrated aqueous HCl 3: platinum; aq.-ethanolic HCl / Hydrogenation View Scheme