1: 97 percent / TiBr4 / CH2Cl2; ethyl acetate / 6 h / 20 °C 2: 85 percent / molecular sieves 4 Angstroem / Ag2CO3/AgClO4 / toluene; CH2Cl2 / 8 h / 20 °C 3: 1.) NiCl2, NaBH4; 2.) pyridine / 1.) ethanol, 1 h; 2.) 6 h, 20 deg C 4: 87 percent / H2 / Pd/C / methanol / 6 h / 20 °C 5: 79 percent / sodium methoxide / methanol / 5 °C / pH = 10.5 View Scheme