| abstract |
A tethered ligand comprising a reaction product of an organofunctional silica and a ligand having a functional group capable of reacting with the organofunctional silica, wherein the organofunctional silica is formed from an alkyl silicate and an organofunctional silane. Be prepared. Also disclosed is a supported catalyst further comprising a source of a catalytically active metal. Also disclosed are methods of preparing tethered ligands and supported catalysts, and methods of using the supported catalysts to perform asymmetric reactions. The catalyst can be easily separated from the reaction mixture and can be reused if desired. |