Ionic liquids are not innocent in Pd catalysis. C–H arylation of thiazolium and imidazolium ionic liquids with aryl halides†
Abstract
The ionic liquids bearing an aromatic vinylic C–H moiety are not innocent during Pd-catalyzed cross-coupling reactions of aryl halides, since palladium-catalyzed direct C–H arylation of thiazolium and imidazolium ionic liquids competes.