1: 86 percent / 4-dimethylaminopyridine / benzene; pyridine / 0.08 h / Ambient temperature 2: 96 percent / K2CrO4 / acetic acid; H2O / Ambient temperature 3: 100 percent / KOH / methanol / 12 h / Heating 4: p-toluenesulfonic acid / Ambient temperature 5: 88 percent / pyridine / 24 h / Ambient temperature 6: 95 percent / 65 h / 80 °C 7: 83 percent / alumina / benzene / 18 h 8: 76 percent / NaBH4, PdCl2 / methanol / 2 h / Ambient temperature 9: KOH / methanol / 1 h / Heating View Scheme

1: 86 percent / 4-dimethylaminopyridine / benzene; pyridine / 0.08 h / Ambient temperature 2: 96 percent / K2CrO4 / acetic acid; H2O / Ambient temperature 3: 100 percent / KOH / methanol / 12 h / Heating 4: p-toluenesulfonic acid / Ambient temperature 5: 88 percent / pyridine / 24 h / Ambient temperature 6: 95 percent / 65 h / 80 °C 7: 83 percent / alumina / benzene / 18 h 8: 76 percent / NaBH4, PdCl2 / methanol / 2 h / Ambient temperature 9: KOH / methanol / 1 h / Heating View Scheme