Acceleration of Batch-type Heterogeneous Ligand-free Suzuki-Miyaura Reactions with Polymer Composite Supported Pd Catalyst.

ABSTRACT: An efficient and recyclable palladium (II) catalyst supported on a double-structured amphiphilic polymer composite was reported previously containing a polymer hydrogel within macroporous polystyrene (PS) microspheres. However, some critical questions have been unaddressed. First, the catalyst accelerated the heterogeneous ligand-free batch Suzuki-Miyaura reaction in a H₂O/EtOH mixture solution at room temperature in the presence of air, which could be ascribed to the "on-water" effect taking place at the interface of the aqueous-organic and basic-aqueous phases created by sodium carbonate in H₂O/EtOH. To this acceleration, the double-structured amphiphilic polymer composite can also contribute by providing hydrogels inside the macroporous PS that served as a microrea

SUBMITTER: Wang M 

PROVIDER: S-EPMC5539156 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature