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Radical-mediated difunctionalization of olefin provides a powerful strategy for the manipulation of olefins and has a high synthetic efficiency.Generally,activated alkenes such as aryl,carbonyl,and heteroatom-substituted alkenes are preferred substrates for alkene difunctionalization because of the p–π conjugate effect,which thus stabilizes the reactive alkyl radical intermediate.In contrast,the reaction with unactivated olefins is more challenging and has received relatively less attention.