In Situ Trapped and Immobilized Palladium Nanoparticles as Active and Clean Catalysts for Suzuki–Miyaura Reaction

Active palladium nanoparticles were trapped and immobilized in situ by Pd‐catalyzed Suzuki–Miyaura reaction to form heterogeneous Pd catalysts. This Pd@PhPad2 catalyst was found to be highly active, recyclable and clean for the Suzuki–Miyaura reaction. Both the anchored diadamantylphosphine ligand and the formation of polyphenylene polymer improved the activity and stability of the Pd@PhPad2 catalyst for Suzuki–Miyaura reaction. The Pd@PhPad2 catalyst was reusable, and no contamination (P ligand or Pd) was detected from the catalyst system for the coupling reaction.