Polymer-supported DABCO-palladium complex as a stable and reusable catalyst for room temperature Suzuki-Miyaura cross-couplings of aryl bromides

摘要

Polymer-supported DABCO-palladium complex was observed as to be efficient and reusable catalytic system for the Suzuki-Miyaura cross-coupling reaction.In the presence of 0.25 mol % of the polymer-supported DABCO-palladium complex,a variety of aryl bromides were coupled with arylboronic acids efficiently in an aqueous ethanol at room temperature under air.Moreover,the reaction was very rapid,and the catalyst could be recovered readily from the reaction by simple filtration and could be reused at least five times.