1: With hydrogenchloride in 1,4-dioxane; dichloromethane T=20°C; 12 h; 2: With sodium hydroxide in 1,4-dioxane; dichloromethane; water

1: With lithium aluminium tetrahydride in tetrahydrofuran T=0 - 20°C; 2: With water in tetrahydrofuran T=0°C;