1: 73 percent / triethylamine / CH2Cl2 / 0 °C 2: H2 / Pd, C (5percent) / toluene / 28 h / 15200 Torr / Ambient temperature 3: 1.) 48percent aq. HBr, 2.) 33percent NaOH / 1.) 80 deg C, 20 h, 2.) water, THF, 24 h View Scheme