1: 91 percent / 2 N NaOH / ethanol / 16 h / Heating 2: 85 percent / NH2OH*HCl, triethylamine / methanol; H2O / 72 h / Heating 3: 98 percent / hydrogen / PtO2 / acetic acid / 336 h / 760 Torr View Scheme

1: 91 percent / 2 N NaOH / ethanol / 16 h / Heating 2: 85 percent / NH2OH*HCl, triethylamine / methanol; H2O / 72 h / Heating 3: 98 percent / hydrogen / PtO2 / acetic acid / 336 h / 760 Torr 4: 84 percent / K2CO3 / dioxane; H2O / 3 h View Scheme

1: 91 percent / 2 N NaOH / ethanol / 16 h / Heating 2: 85 percent / NH2OH*HCl, triethylamine / methanol; H2O / 72 h / Heating 3: 98 percent / hydrogen / PtO2 / acetic acid / 336 h / 760 Torr 4: 84 percent / K2CO3 / dioxane; H2O / 3 h View Scheme

sodium hydroxide in ethanol 16 h; Heating;