INTRODUCTION Until recently, water was often considered unsuitable as a solvent for organic synthesis due to the sensitivity of organic molecules to moisture and oxygen. However, recent literature highlights that conducting synthetic and catalytic transformations in and on water offers numerous advantages compared to traditional organic solvents. The high bond dissociation energies of the O-H bonds in water preclude in radical reactions the competing abstraction of hydrogen atoms from H2O. This enables selective transformations in aqueous media without side reactions arising from radical interactions with the solvent.