1: 789 mg / conc. HCl / H2O; acetone / 3.25 h / 3 °C 2: 184 mg / p-TsOH / CH2Cl2 / 0.75 h / 0 °C 3: sodium methylsulfinylmethide / dimethylsulfoxide / 30 h / Ambient temperature 4: 97 mg / diethyl ether 5: 514 mg / aq. acetic acid / 24 h / 30 - 40 °C 6: 188 mg / pyridine / 3 °C 7: 216 mg / 5percent KOH / methanol; H2O / 2 h / Ambient temperature View Scheme