Fig. 5. Flow photocatalysis for improved productivity. Reactions performed using 1 (0.2 mmol), 2 (0.6 mmol), TMG (1 equiv.) in 2 mL of CH₃CN under illumination by two single wavelength Kessil LED (λ_max = 390 nm, irradiance = 100 mW cm⁻²) inside a photoreactor. Yields of the isolated products 3 are reported below each entry. ID: inner diameter. Conditions for batch reactions are detailed in Fig. 3 (4 hours reaction time, using 2 equiv. of Cs₂CO₃).