Increasing the loading of RAE 10 to 1.5 equiv. was also beneficial (entry 7), presumably due to the preferential consumption of 10 over ArI. A Mg sacrificial anode proved crucial (entry 8). The optimum conditions emerged by combining these observations (entry 9). Control studies showed that in this coupling Ag is not crucial, but improved yield moderately (entry 10). This effect can be ascribed to the suppression of RAE degradation on the cathode by deposited AgNP. To rule out in-situ generation of a Grignard reagent, purely chemical conditions using activated Mgturnings (entry 11) and reaction progress on an electrochemically activated Mg surface (entry 12)