Journal
RSC ADVANCES
Volume 7, Issue 65, Pages 41144-41151Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra07757b
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Funding
- Austrian Science Fund (FWF project) [P25504-N28]
- Austrian Science Fund (FWF) [P25504] Funding Source: Austrian Science Fund (FWF)
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We report the design and synthesis of surface-active ionic liquids for application in palladium-catalyzed cross coupling reactions. A series of dodecylimidazolium-based ionic liquids were applied as additives in the Heck reaction of ethyl acrylate and iodobenzene, and high yields of >90% could be obtained in water without the addition of further ligands. Our results indicate that the ionic liquid concentration in water is the key factor affecting the formation of the catalytically active species and hence the yield. Moreover, imidazolium-based ionic liquids that are able to form a carbene species differ significantly from conventional cationic surfactants, as a concentration dependent formation of the N-heterocyclic carbene complex was observed.
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