1: 2-methoxy-4nitro-aniline With hydrogenchloride; C19H23N7O8S3; sodium nitrite in water T=10°C; 1 h; 2: aceto-acetyl-amino-2-methoxy-benzene With sodium hydroxide; sodium acetate; acetic acid in water T=25 - 90°C; pH=6; 2.5 h;

1: o-tolidine-6,6'-disulfonic acid; 2-methoxy-4nitro-aniline With hydrogenchloride; sodium nitrite in water T=10°C; 1 h; 2: aceto-acetyl-amino-2-methoxy-benzene With sodium hydroxide; sodium acetate; acetic acid in water T=25 - 90°C; pH=6; 150 h;

sodium hydroxide; acetic acid in water T=10 - 20°C; pH=4.2; 0.133333 - 2 h; Industry scale; Product distribution / selectivity;

in tetrahydrofuran 5 h; Photolysis;

in tetrahydrofuran 5 h; Photolysis;