1: 82 percent / HCl(gas) / ethyl acetate / 5.5 h / Ambient temperature 2: 2.) 10percent Pd/C / 1.) 2-propanol, 80 deg C, 1.5 h, 2.) CHCl3, 30 min 3: H2, Et3N / 10percent Pd/C / tetrahydrofuran / 5 h View Scheme