Fluorescence on the Flow: Continuous Xanthene Dye Synthesis from Gallic Acid in a Coiled Flow Inverter.

Transparent coiled flow inverters (CFI), which are superior to opaque coil reactors, are hardly explored in performing condensation reactions of organic molecules. Herein, the continuous flow condensation reaction of gallic acid using CFI is reported with a 4 mm internal diameter. The length of the flow reactor is varied by connecting CFIs in series.