|
In chapter 1, we use 2-naphthyl-2-adamantyl p-nitrobenzoate to measure the
solvolysis rate constant and to show the necessary that develop the YxBnX
scales.
In chapter 2 and chapter 3，we use Grundwald-Winstein equation correlation
analysis ortho-methyl substituted of benzhydryl and 9-aryl-9-fluorenyl
substrates. For benzhydryl substrates，we can know the different effect by
means of solvolysis when the increase of ortho-methyl group.
The log k value of 9-aryl-9-fluorenyl derivatives handles correlation
analysis with different Y scales，When the aryl ring have nonsubstituted or
monosubstituted group，9-aryl-9-fluorenyl cation can extensive charge
delocalization throughout the aryl ring and 9-fluorenyl ring。The more
methyl group increase on aryl ring，the higher crowded reaction center.
The phenomenon of electrophilic pull will be obvious to leaving group
|