gallium(III) bromide in diethyl ether T=-17°C; 3 h; Yields of byproduct given;

1: 44 percent / GaBr3 / diethyl ether / 3 h / -17 °C 2: 90 percent / dimethylsulfoxide / 66 h / 80 °C 3: 90 percent / H2 / 10 percent Pd/BaSO4 / ethyl acetate / 2 h 4: 97 percent / K2CO3 / methanol; H2O / 15 h / Ambient temperature 5: 1) Mg / 2) THF, 1 h, 50 deg C 6: 91 percent / pyridine 7: 1) PI3; 2) LiAlH4 / 1) CS2, room temp., 30 min, ether; 2) THF, 90 min, reflux View Scheme