1: 16.7 g / picric acid / benzene / 2.25 h / Ambient temperature 2: 14.8 g / LiAlH4 / diethyl ether / 1.17 h / Ambient temperature 3: 1.) pyridine-SO3/Et3N / 1.) DMSO, room temp., 30 min; 2.) ether, 2 h, room temp. 4: 2.64 g / NaBH4 / methanol / 1.5 h / 0 °C 5: 789 mg / conc. HCl / H2O; acetone / 3.25 h / 3 °C 6: 184 mg / p-TsOH / CH2Cl2 / 0.75 h / 0 °C 7: sodium methylsulfinylmethide / dimethylsulfoxide / 30 h / Ambient temperature 8: 97 mg / diethyl ether 9: 514 mg / aq. acetic acid / 24 h / 30 - 40 °C 10: 188 mg / pyridine / 3 °C 11: 216 mg / 5percent KOH / methanol; H2O / 2 h / Ambient temperature View Scheme

1: 16.7 g / picric acid / benzene / 2.25 h / Ambient temperature 2: 14.8 g / LiAlH4 / diethyl ether / 1.17 h / Ambient temperature View Scheme