potassium hydroxide in ethanol 0.5 h; Reflux;

1: 1-amino-2-chloro-5-trifluoromethylbenzene With hydrogenchloride; sodium nitrite T=0 - 5°C; 2: furan-2-carboxylic acid With copper dichloride in water T=20°C; 4 h; Further stages.;