A wide range of organometallic methods have been developed for the mild and efficient synthesis of biaryl compounds.[1–5] In this context, addition reactions of aryl radicals to aromatic substrates have so far only rarely been applied.[6] Complications in intermolecular radical aryl–aryl couplings occur as a result of the relatively slow addition of aryl radicals to common substrates such as substituted benzenes,[7] which in turn gives rise to side ...