1: 4-amino-1H-pyrazole-3-carboxylic acid methyl ester With sodium hydroxide; water in 1,4-dioxane T=15 - 55°C; 5 h; 2: di-tert-butyl dicarbonate in 1,4-dioxane; water T=20 - 55°C; 1.08333 - 19 h; 3: With hydrogenchloride; water pH=~ 2;

sodium hydroxide in 1,4-dioxane; water

1: 4-amino-1H-pyrazole-3-carboxylic acid methyl ester With sodium hydroxide in 1,4-dioxane; water T=15 - 55°C; 5 h; 2: di-tert-butyl dicarbonate in 1,4-dioxane; water T=50 - 55°C; 2 - 19 h; 3: With hydrogenchloride in water pH=2; Product distribution / selectivity;

sodium hydroxide in 1,4-dioxane; water

1: in 1,4-dioxane; water T=20 - 55°C; 1.83333 - 19 h; 2: With hydrogenchloride in water pH=~ 2; Product distribution / selectivity;