A single-step procedure for the preparation of palladium nanoparticles and a phosphine-functionalized support as catalyst for Suzuki cross-coupling reactions

作者：Costa Natalia J S; Kiyohara Pedro K; Monteiro Adriano L; Coppel Yannick; Philippot Karine; Rossi Liane M^*

来源：Journal of Catalysis, 2010, 276(2): 382-389.

DOI：10.1016/j.jcat.2010.09.028

• Palladium
• Iminophosphine
• Suzuki reaction
• Nanoparticle
• Magnetic separation

We here report the preparation of supported palladium nanoparticles (NPs) stabilized by pendant phosphine groups by reacting a palladium complex containing the ligand 2-(diphenylphosphino)benzaldehyde with an amino-functionalized silica surface The Pd nanocatalyst is active for Suzuki cross-coupling reaction avoiding any addition of other sources of phosphine ligands The Pd intermediates and Pd NPs were characterized by solid-state nuclear magnetic resonance and transmission electron microscopy techniques The synthetic method was also applied to prepare magnetically recoverable Pd NPs leading to a catalyst that could be reused for up to 10 recycles In summary we gathered the advantages of heterogeneous catalysis magnetic separation and enhanced catalytic activity of palladium promoted by phosphine ligands to synthesize a new catalyst for Suzuki cross-coupling reactions The Pd NP cat

• 出版日期2010-12-15