Two types of neighboring group participation in intramolecular displacement reactions are distinguished by reference to intermolecular SN1 and SN~ processes. The thiomethyl (in o- allylthioanisole) and methoxyl (in O-allylanisole) groups were compared with the H in allylbenzene as reference in respect to their participation as neighboring groups in a series of electrophilic and free radical chain addition reactions of the double bond. The addition ...
