SUMMARY Z-(Trifluoromethyl) imidazo [4, 5-f] and-[4, 5-hlquinoline have been prepared from 5 (6)-acetamido-2-(trifluoromethyl) benzimidazole and 7, 8_diaminoquinoline respectively. These (trifluoromethyl)-quinolines like 2-(trifluoromethyl) imidazoles but unlike 2-(trifluoromethyl) benzimidazoles, undergo hydrolysis in dilute sodium hydroxide to give ultimately the corresponding imidazo [4, 5-f] and-[4, 5-h]-quinoline, respectively.