Papers by Keyword: Suzuki Reaction

Abstract: The environmentally benign Suzuki cross-coupling reaction was developed by using ScCO₂ (Supercritical CO₂) instead of traditionally organic solvent. In the paper the compound phenylferrocene was synthesized by the Suzuki cross-coupling reaction of iodoferrocene and phenylboronic acids in ScCO₂/PEG (polyethylene glycol) with excellent yield ratio in the presence of ligand-free Pd/C catalyst and K₂CO₃.1.5H₂O as base. The Pd/C catalyst can be reused by simply washing sequence and CO₂ can be recycled after depressurization. The catalytic reaction conditions were optimized in the reaction using ScCO₂ as solvent.

Abstract: Palladium chloride anchored on polystyrene modified by 5-amino-1,10-phenanthroline was prepared and used as catalysts for the Suzuki cross-coupling reactions of aryl halide with arylboronic acid in supercritical carbon dioxide without use of organic solvent. The heterogeneous catalyst revealed excellent and recoverable catalytic performance for a wide range of aryl halides substrates. It can be easily separated from the reaction mixture and reused for six recycles without significant loss of catalytic activity.

Abstract: Pd catalyst is very active in Suzuki reaction. As a heterogeneous catalyst, SWNTs/Pd shows highly catalytic ability with Suzuki reaction. We will demonstrate the effect of catalyst’s amount, the reaction time and temperature on Suzuki reaction in this work. In comparison, a control experiment used commercial Pd/C as catalyst in Suzuki reaction has been done. An optimum reaction condition of about reacting 60 min at 50°C with 5% (mass%) catalyst is confirmed finally, and a better catalytic ability of SWNTs/Pd than commercial Pd/C is also observed.