Finally, to translate the batch electrochemical conditions to flow and also to allow sufficient reaction time inside the reactor to boost the conversion, we quickly optimized the conditions (Table ), and opted for a recirculating flow regime. Following this modified procedure, the coupling of benzaldehyde (1k) and butylamine (3a), to obtain product 23, was readily scaled up in flow (5 mmol, 50% isolated yield, Scheme 3). This flow system enabled a reliable 10-fold increase in productivity (0.1 mmol•h -1 ) compared to the batch system (0.01 mmol•h -1 ). suppressed, and adduct 38 (26% NMR yield) was identified via HRMS, confirming the involvement of a radical species. In parallel, a reaction with an electron-deficient olefin, dimethyl maleate, produced product 39 (13% NMR yield) along with product 3, indicating the probable formation of a acyl radical via a chlorine-mediated hydrogen atom transfer (HAT) step (Scheme 4A). Kinetic Isotope Effect (KIE) evaluations, carried out using a parallel reaction approach, yielded a value close to 1 (KIE = 1.13),