hydrogenchloride in isopropyl alcohol; benzene 0.0833333 h;

1: 1.) NaOH, CuSO4, 2.) HCl / H2O / 1.) reflux, 6 h 2: 75 percent / BF3*Et2O / 4 h / Heating 3: 85 percent / Ag2O, Na2SO4 / diethyl ether / 0.33 h 4: 60 percent / HCl / benzene; propan-2-ol / 0.08 h View Scheme

1: 75 percent / BF3*Et2O / 4 h / Heating 2: 85 percent / Ag2O, Na2SO4 / diethyl ether / 0.33 h 3: 60 percent / HCl / benzene; propan-2-ol / 0.08 h View Scheme

1: 85 percent / Ag2O, Na2SO4 / diethyl ether / 0.33 h 2: 60 percent / HCl / benzene; propan-2-ol / 0.08 h View Scheme