An example is the synthesis of neophyl chloride from benzene and methallyl chloride::H2C=C(CH3)CH2Cl + C6H6 → C6H5C(CH3)2CH2ClIn one study the electrophile is a bromonium ion derived from an alkene and NBS:In this reaction samarium(III) triflate is believed to activate the NBS halogen donor in halonium ion formation.
Bil je tudi zelo prijazen".