1: With sodium tetrahydroborate in methanol 3 h; 2: With hydrogenchloride; water in methanol; ethyl acetate 3: With sodium hydrogencarbonate in water; ethyl acetate

sulfuric acid 1 h; Heating;

1: With hydrogenchloride; water in 1,4-dioxane T=90°C; 14 h; 2: With sodium hydroxide in 1,4-dioxane; water pH=~ 8;