1: water, NaOH / methanol / 5 h / Heating 2: H2 / palladized charcoal (10percent) / ethyl acetate 3: 92 percent / conc. sulphuric acid / 16 h / Heating 4: 100 percent / lithium aluminium hydride / diethyl ether / 3 h / Ambient temperature 5: 100 percent / pyridine / toluene / 3 h / 60 °C 6: 90 percent / chromium trioxide / H2O; acetic acid / 1) 0 deg C, 0.5 h, 2) r.t., 1 h 7: 91 percent / conc. sulphuric acid / 12 h / Ambient temperature 8: 77 percent / H2 / palladized charcoal (10percent) / ethyl acetate 9: 100 percent / pyridinium chlorochromate, anhydrous sodium acetate / CH2Cl2 / 3 h / Ambient temperature 10: 1) butyl-lithium, 2) hexamethylphosphoric triamide / hexane, THF, 1) - 78 deg C, 0.5 h, 2) - 78 deg C, 2 h 11: 100 percent / LiAlH4 / tetrahydrofuran / 0.25 h 12: 100 percent / 1percent aq. iron(III)chloride / benzene / 0.25 h View Scheme