Heck and Suzuki Reactions of Aryl Halides Catalyzed by 1,3-Dialkylimidazolinium/Palladium

New, sterically demanding 1,3-dialkylimidazolinium salts used as N-heterocyclic carbene precursors were synthesized and characterized. These salts, combined with palladium acetate, provided active catalysts for Heck and Suzuki cross-coupling of aryl chlorides and bromides under mild conditions.