1: 68 percent / 6N HCl / 16 h / Heating 2: thionyl chloride / CH2Cl2 / 4 h / Heating 3: anh. AlCl3 / CH2Cl2 / 2 h / Heating 4: 55.4 percent / LiAlH4 / tetrahydrofuran / 192 h / Heating 5: 85 percent / 10percent H2SO4 / 24 h / Heating View Scheme

Multi-step reaction with 4 steps 1: 90.5 percent / Br2 / Fe / I2 / CCl4 2: 91.6 percent / N-bromsuccinimide, dibenzoylperoxide / CCl4 / 6 h / Heating3: 1.)NaOEt / 1.)EtOH, reflux, 2 h, 2.)reflux, 16 h4: 58.7 percent / 5N NaOH / methanol / 2.25 h / Heating