N-(Pentafluorophenyl)carbonimidoyl dichloride (1) reacts, in the presence of excess AlCl3, with fluorinated benzenes containing 1-5 fluorine atoms in the molecule. With fluoro- and 1,3,5-trifluorobenzene the reaction gives the corresponding imidoyl chlorides and azomethines; at elevated temperatures, azomethines are formed in increased amounts. With 1,2,4,5-tetrafluorobenzene and pentafluorobenzene, intramolecular cyclization, leading to polyfluorinated 1,2,3,4-tetrahydroquinazoline-2,4-diones 9 is preferred. The side reactions are fluorine substitution with chlorine and formation of 1,3-bis(pentafluorophenyl)urea (10).
N-(五氟苯基)碳亚胺二氯化物(1)在过量AlCl3存在下,与含有1-5个氟原子的氟化苯发生反应。与氟代苯和1,3,5-三氟苯反应会生成相应的亚胺氯化物和偶氮甲烷;在升高温度下,偶氮甲烷的生成量会增加。与1,2,4,5-四氟苯和五氟苯反应会发生分子内环化反应,导致多氟化的1,2,3,4-四氢喹啉-2,4-二酮(9)的形成更为优先。副反应包括氟与氯的取代反应以及1,3-双(五氟苯基)脲(10)的生成。