Use of Polymer-Supported Vinylsilane Ligands for Palladium-Catalyzed Suzuki-Miyaura Cross-Coupling Reactions

Use of Polymer-Supported Vinylsilane Ligands for Palladium-Catalyzed Suzuki-Miyaura Cross-Coupling Reactions

In this study, the synthesis and characterization of new bis(dimethylvinyl)methane palladium (0), poly(styrene)-co-## [1,1-bis(dimethylvinyl)ethylstyrenes] palladium (0) and their catalyst activity in Suzuki-Miyaura coupling reactions of aryl bromides with phenylboronic acid have been reported. More importantly, the palladium supported polymer catalyst can be reused for at least six successive runs without any discernible decrease in its catalytic activity and no remarkable changes were observed in catalyst structure. The structures of all the new compounds have been elucidated by a combination of NMR spectroscopy, IR spectroscopy and elemental analysis

In this study, the synthesis and characterization of new bis(dimethylvinyl)methane palladium (0), poly(styrene)-co-## [1,1-bis(dimethylvinyl)ethylstyrenes] palladium (0) and their catalyst activity in Suzuki-Miyaura coupling reactions of aryl bromides with phenylboronic acid have been reported. More importantly, the palladium supported polymer catalyst can be reused for at least six successive runs without any discernible decrease in its catalytic activity and no remarkable changes were observed in catalyst structure. The structures of all the new compounds have been elucidated by a combination of NMR spectroscopy, IR spectroscopy and elemental analysis