Between Sn2 and Sn1 reaction mechanisms, which one would be faster?
plz explain this overall rate for 1", 2", 3" , Allylic and benzylic halides.
As per my knowledge SN2 goes 1>2>Allylic~benylic ~ 3 and and Sn1 3', Allylic~benylic~2", >1' but I cannt think of overall rate.