1: With lithium hydroxide; water in methanol T=90°C; 1.5 h; 2: With hydrogenchloride in 1,4-dioxane; water T=100°C; 2 h; 3: With sodium carbonate in water pH=8;

1: With hydrogenchloride in 1,4-dioxane; water T=100°C; 2 h; 2: With sodium carbonate in water pH=8;