Palladium-catalyzedregioselective amination of unactivated alkene remains a challenge and is of great interest. Herein, a three-component coupling of unactivated alkene, sulfonamide and N-halo compound accessing to vicinal haloamine has been conceived. This aminohalogenation represents a modular and regioselective strategy. The electrophilic halogenating agent enables regioselective anti-Markovnikov