1: ethanol / Ambient temperature 2: NaH / dioxane / 0.25 h / 60 °C / or K2CO3 in acetonitrile, reflux, 6 h; or tetrabutylammonium fluoride in THF, 1 h View Scheme

in ethanol 1 h; Ambient temperature;

1: ethanol / 1 h / Ambient temperature 2: NaH / dioxane / 1 h / Ambient temperature View Scheme

1: ethanol / Ambient temperature 2: 91 percent / NaH / dioxane / 0.25 h / 60 °C 3: 0.435 g / acetonitrile / 0.5 h / Heating 4: 1 N aq. NaOH / H2O / 0.5 h / Heating View Scheme