1: 1-amino-2chloro-4-methylbenzene With hydrogenchloride; sodium nitrite in water T=-5 - 5°C; 0.25 h; 2: formaldehyde oxime sodium salt With sodium acetate; copper(II) sulfate; sodium sulfate in water T=10 - 15°C; 1 h; 3: With hydrogenchloride in water 2 h; Heating / reflux;