Salicylaldoxime-functionalized poly (ethylene glycol)-bridged dicationic ionic liquid ([salox-PEG_(1000)-DIL][BF4]) as a novel ligand for palladium-catalyzed Suzuki-Miyaura reaction in water

摘要

Two novel salicylaldoxime-functionalized poly(ethylene glycol)-bridged dicationic ionic liquids ([salox-PEG_(1000)-DIL][BF4] and [salox-PEG_(1000)-DIL][PF6]) were prepared and characterized. [salox-PEG_(1000)-DIL][BF4] was found to be an efficient and recyclable ligand for palladium-catalyzed Suzuki-Miyaura reaction in water. The catalytic system could be easily recovered and reused for at least five runs only with slight decrease in its activity.