New synthesis method uses light reaction on a water surface

https://phys.org/news/2024-02-synthesis-method-reaction-surface.html

"molecules to be reacted applied to water surface forming thin film and irradiated with violet light triggering reaction... exploits film formation of water-insoluble organic molecules on water surface creating ideal conditions for activation by light... chemical synthesis without organic solvents or other reaction additives, efficient, environmentally friendly... breakthrough transfers reaction to flow reactor so synthesis carried out continuously and larger amounts of product accessible... numerous syntheses including drug precursors"