1: 72 percent / 2-methyl-propan-2-ol / 15 h / Heating 2: 97 percent / HCl gas / methanol / 0.25 h 3: 1.) conc. HCl, 2.) NaNO2 / 1.) EtOH, H2O, 50 deg C, 2.) EtOH, H2O, 10 deg C, 15 min View Scheme