hydrogenchloride; sodium nitrite in water T=5°C; 2 h;

Multi-step reaction with 3 steps 1: 67 percent / KOH, NH2OSO3H, NaHCO3 / H2O / 0.17 h / 50 °C2: 99 percent / KOH / ethanol / 0.08 h / Heating3: 97 percent / dimethylformamide / 1) 20 deg C, 2 h, 2) 60 deg C, 1 h  

Multi-step reaction with 2 steps 1: 99 percent / KOH / ethanol / 0.08 h / Heating2: 97 percent / dimethylformamide / 1) 20 deg C, 2 h, 2) 60 deg C, 1 h