A catalyst composition is provided, which may be used for ring closing metathesis. In the composition, a catalyst is immobilized on a siliceous mesocellular foam support. A suitable catalyst for use in the composition is a Grubbs-type catalyst or a Hoveyda-Grubbs-type catalyst.
Mesocellular Foam-Supported Catalysts: Enhanced Activity and Recyclability for Ring-Closing Metathesis
作者:Jaehong Lim、Su Seong Lee、Siti Nurhanna Riduan、Jackie Y. Ying
DOI:10.1002/adsc.200600442
日期:2007.5.7
siliceous mesocellular foam (MCF). The open and interconnected pores of MCF facilitated ligand immobilization and substrate diffusion. We have observed that the ligand and metal loadings significantly affected the catalytic activity and recyclability. Enhancedrecyclability by suppression of ruthenium leaching was achieved by using excess immobilized ligands. The resulting novel heterogenized catalysts demonstrated