Advanced heterogeneous Pd catalysts for the Suzuki–Miyaura reaction with aryl bromides

Abstract

The set of heterogeneous Pd catalysts containing different forms of Pd (PdCl42– or Pd0) was prepared by chemical modification and laser electrodispersion using two types of + supports, namely, SiO2 modified by ionic liquid and γ-Al2O3. Testing of the synthesized catalysts in the Suzuki–Miyaura reaction with aryl bromides pointed out the possibility to achieve the prominent TOF and TON values. The dependencies of TOF on the catalyst loading indicate that only a fraction of loaded Pd was involved in the catalysis.