The mild conditions of this photocatalyst-free system proved advantageous compared to a reaction photocatalysed by a prototypical iridium polypyridyl complex, which resulted in lower yields (Entry 7, Table ). Using the aryl radical acceptor as the limiting reagent, while having the RAE in excess, also led to a reduced yield (Entry 8, Table ). Irradiation with 405 nm LEDs offered a comparable yield (Entry 9, Table ), in agreement with the broad absorption band of the EDA complex (Fig. ). The radical nature of the reaction was confirmed by the addition of a radical scavenger, TEMPO, which halted reactivity and product formation (Entry 10, Table ).