Abstract
This work reports the copper(i)-catalyzed 5-exo-trig radical cyclization/borylation of alkyl halides bearing an alkene moiety, during which a C-C bond and a C-B bond were formed in one step. Various functionalized pyrrolidine derivatives bearing a quaternary carbon center were obtained, and they showed good functional group tolerance and high chemoselectivity. This transformation was highly efficient and could be finished in 20 minutes. A radical mechanism has been proposed.
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