1: HCl / CHCl3 / 2 h / Ambient temperature 2: 85 percent / LiAlH4 / tetrahydrofuran / 1 h / Heating 3: 84 percent / conc, HCl / CHCl3 / Ambient temperature 4: 91 percent / H2 / 10percent Pd/C / ethyl acetate / 982.6 Torr View Scheme