hydrogen; palladium 10 on activated carbon in ethanol 20 h;

in 2-ethoxy-ethanol 2 h; Heating; Yield given;

1: With triethylamine in 1,4-dioxane T=50°C; 2: With sodium hydroxide; water in 1,4-dioxane T=50°C; 6 h; 3: With hydrogenchloride in water pH=3;