T=140°C;

1: 2-nitro-4-(trifluoromethyl)benzene-carbonitrile With iron(III) chloride; hydrazine hydrate in methanol; water 3 h; Heating; 2: formic acid With hydrogenchloride in water T=90 - 130°C; Further stages.;

phosphorus pentachloride in trichlorophosphate 3 h; Heating;