Alkylamination of Styrenes with Alkyl N-Hydroxyphthalimide Esters and Amines by B(C6H5)3-Facilitated Photoredox Catalysis

A new, three-component 1,2-alkylamination of styrenes with alkyl N-hydroxyphthalimide (NHP) esters and amines by Lewis acid and visible-light photoredox cooperative catalysis is described. This reaction employs alkyl NHP esters as general alkylation reagents to accomplish the 1,2-alkylamination of alkenes in high efficiency and with excellent functional groups tolerance, significantly enhancing the synthetic potential of 1,2-alkylaminations of alkenes for accessing complex functionalized amines.