Polymer-supported macrocyclic Schiff base palladium complex: An efficient and reusable catalyst for Suzuki cross-coupling reaction under ambient condition

Polymer-supported macrocyclic Schiff base palladium complex was prepared and characterized. The catalyst exhibits excellent catalytic activity and stability for Suzuki cross-coupling reaction under ambient condition. Various aryl bromides were coupled with aryl boronic acids in DMF/H2O, under air, in the presence of 0.1 mol% of the catalyst to afford corresponding cross-coupled products in high yields within 20–30 min. Furthermore, the heterogeneous catalyst can be readily recovered by simple filtration and reused several times without significant loss in its activity.

Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Polymer-supported macrocyclic Schiff base palladium complex has been synthesized and characterized. ► The catalyst exhibits excellent catalytic activity and stability in the room-temperature Suzuki cross-coupling reaction. ► Various aryl bromides were coupled with aryl boronic acids to afford corresponding products in high yields within 20–30 min. ► The catalyst can be readily recovered by simple filtration and reused for several times without significant loss in its activity.