Fig. 2: Microslug reactors used in segmented flow.

a Exploded-view computer-aided design (CAD) model of the CSTR cascade for handling solid-containing photochemical reactions. b Picture of the assembled CSTR cascade. c Schematic of continuous flow synthesis in the CSTR. d CSTR after 8 h of continuous flow. It is visible that the solid byproduct makes up almost 50% in volume. "Adapted from Duvadie, R.; Pomberger, A.; Mo, Y.; Altinoglu, E. I.; Hsieh, H.-W.; Nandiwale, K. Y.; Schultz, V. L.; Jensen, K. F.; Robinson, R. I. Photoredox iridium-nickel dual catalyzed cross-electrophile coupling: from a batch to a continuous stirred-tank reactor via an automated segmented flow reactor. Org. Process Res. Dev., 25 (10), 2323–2330, Copyright (2021), with permission from American Chemical Society”.