The ethoxy group migration of 1-(methylethoxysulfonio)-9-(methylthio)dibenzothiophene was identified by 1H-NMR at 25 °C. The similar rearrangement of 1-(methylethoxysulfonio)-8-(methylthio)naphthalene was found in identical conditions. The ethoxy scrambling did not proceed in 2-(methylethoxysulfonio)-2′-(methylthio)biphenyl.
1-(methylethoxysulfonio)-9-(methylthio)dibenzothiophene 的乙氧基迁移是在 25 °C 下通过 1H-NMR 确定的。在相同的条件下,1-(甲乙氧磺酰基)-8-(甲
硫基)
萘也发生了类似的重排。在 2-(甲基乙氧基磺酰基)-2′-(甲
硫基)
联苯中,乙氧基扰乱没有进行。