Since its discovery in 1877, the Friedel–Crafts reaction has attracted great interest for the formation of C–C bonds with aromatic compounds.1 Many efforts have been made for the development of Friedel–Crafts reactions with a catalytic amount of a Lewis acid.2 In particular, Bi(OTf) 3 has shown interesting catalytic activity in acylation reactions.3 However, in the context of alkenylation reactions, the coupling of aromatic compounds with olefins generally suffers from ...