A facile surfactant-based hexaalkylguanidinium ionic liquid (GIL)-mediated
Suzuki coupling procedure has been developed using ligand-free Pd
catalysts. The procedure involving the use of nanometric palladium
micelles, is operationally simple and remarkably efficient for the
coupling of aryl bromides or aryl chlorides with boronic acids in
water. Furthermore, the GIL/H2O catalytic system
was more stable than the tetrabutylammonium bromide/H2O
catalytic system under basic conditions, enabling the recycling
of the nano-Pd micelle catalysts.
guanidinium ionic liquids - ligand-free - micelle - palladium nanoparticles - Suzuki
coupling