The radical attack giving anti-Friedel-Crafts regioselectivity was highly selective in the case of aryl aromatic acceptors, with loss of yield mainly arising from alkyl radical quenching and alkylation of the phthalimide fragment of the RAE. Meanwhile in the heteroaryl case, we observed some minor regioisomer formation notably at the C4 position on the pyridines. The overall anti-Friedel-Crafts selectivity however was retained, and total yield loss was minimised given the electron deficient nature of these heteroaryl species as improved nucleophilic alkyl radical acceptors (Supplementary Section 5.2).