1: 74 percent / NaBH4; CoCl2*6H2O / methanol; tetrahydrofuran / 1 h / 20 °C 2: MS4 Angstroem / tetrahydrofuran / 2 h / Heating 3: NaBH4 / methanol / 1 h / 20 °C 4: 50 percent / Cu(OAc)2; air / Pd(OAc)2 / dimethylsulfoxide / 12 h / 110 °C / 760 Torr 5: 99 percent / AlCl3 / methoxybenzene / 1 h / 110 °C View Scheme