1: 100 percent / aq. KOH / ethanol / 1 h / Ambient temperature 2: 67 percent / dimethylformamide / 1.5 h / Heating 3: 100 percent / H2, aq. HCl / 10 percent Pd/C / ethanol 4: 100 percent / 6 N HCl / 4 h / Heating 5: CuSO4, pH 9 / dioxane; H2O / 16 h / Ambient temperature 6: pH 12.5 / 20 h / Ambient temperature View Scheme

1: 83 percent / m-chloroperbenzoic acid / CH2Cl2 / 1 h / Ambient temperature 2: 88 percent / Et3N / acetonitrile / 20 h / Heating 3: 85 percent / 18percent HCl / H2O / 1 h / Heating View Scheme

hydrogen bromide

sodium hydroxide in ethanol; water

potassium hexamethylsilazane in acetonitrile T=-40 - 20°C;

in ethanol

ethanol

ethanol; benzene

sodium ethanolate