Suzuki reaction catalyzed by Pd(II) anchored on polymer in supercritical carbon dioxide

摘要

Palladium chloride anchored on polystyrene modified by 5-amino-l,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.