The first examples of persistent carbocations derived from parent fluoranthene (four fused rings), benz[e]acephenanthrylene (benzo[b]fluoranthene) (five fused rings) and its C-10 substituted derivatives (X = OMe, F), as well as indeno[1,2,3-cd]pyrene (six fused rings) by protonation with FSO3H–SO2ClF are reported. NMR characteristics (500 MHz) of the resulting carbocations, their charge delocalization
衍生自母体
荧蒽(四个稠合环),苯并[ e ]对
菲(苯并[ b ]
荧蒽)(五个稠合环)及其C-10取代衍
生物(X = OMe,F)的持久碳阳离子的第一个实例据报道,用FSO 3 H–SO 2 ClF质子化了
茚并[1,2,3- cd ]](六个稠合环)。考察了所得碳阳离子的NMR特性(500
MHz),其电荷离域模式和极性。