Despite the instabity of perfluoralkyl anions, it is possible to perfluoroalkylate aromatic compounds if appropriately substituted by suitable electronegative substituents (e.g., nitro, trifluoromethylsulfonyl, etc.). Thus a novel Meisenheimer complex is formed by thermally decomposing a salt of a perfluoroalkanoic acid in the presence of an aromatic compound such as 1,3,5-trinitrobenzene. Oxidation with organic hypochlorite yields the corresponding perfluoroalkylated aromatic compound.
尽管
全氟烷基阴离子不稳定,但如果适当地用适当的电负取代基(例如,硝基,三
氟甲磺酰基等)取代芳香化合物,仍然有可能对芳香化合物进行
全氟烷基化。因此,在存在芳香化合物(例如
1,3,5-三硝基苯)的情况下,通过热分解
全氟烷酸盐形成一种新型的Meisenheimer络合物。使用有机
次氯酸盐氧化可得到相应的
全氟烷基化芳香化合物。