Highly efficient recyclable polymer anchored palladium catalyst for CC and CN coupling reactions

An inexpensive, air-moisture stable and reusable PS–Pd(II)-furfural complex was synthesized by reacting polymeric amine with furfural to get polymer anchored ligand which was then reacted with Pd(OAc)2 to get polymer anchored complex. This complex was characterized by different spectroscopic and elemental analyses. The activities of the Pd-complex were tested for the CC and CN cross-coupling reactions under various reaction conditions. The catalyst exhibits high catalytic activities for the coupling of various aryl halides with organoboronic acid, alkene, alkyne and amine providing excellent yields of desired product. Further, the catalyst can be easily recovered by simple filtration and reused up to five times without significant loss of its catalytic activity.

The polymer anchored catalyst PS–Pd(II)-furfural has been prepared and characterized. It exhibited high catalytic activities toward the CC and CN coupling reactions. This catalyst can be reused up to five times without significant loss of its catalytic activities.Figure optionsDownload high-quality image (113 K)Download as PowerPoint slideHighlights
► Polymer anchored Pd(II) catalyst was synthesized and characterized.
► This catalyst shows excellent catalytic activity in Suzuki cross-coupling, Sonogashira, Heck and amination reaction.
► Above CC and CN coupling reactions are optimized.
► This catalyst can be recycled up to five times.