1: NaBH4 / methanol / 0 degC to room temp. 2: aq. H2SO4; tetrahydrofuran / Heating 3: NaOAc 5: aq. HCl / Heating 6: 99 percent / aq. 2M Na2CO3 / Pd(PPh3)4 / benzene / Heating 7: 85 percent / 1) NaNO2, dil. HCl, 2) NaN3 / 1) 0 degC 8: 96 percent / various solvent(s) / 180 °C View Scheme