These substitutions can be produced by two different mechanisms categorized at: unimolecular nucleophilic substitution (SN1) and bimolecular nucleophilic substitution (SN2).
Ta supstitucija se može odvijati putem dva različita mehanizma: unimolekularna nukleofilna supstitucija (SN1) i bimolekularna nukleofilna supstitucija (SN2).