4494-83-1Relevant academic research and scientific papers
Weil-defined silica-supported olefin metathesis catalysts
Allen, Daryl P.,Wingerden, Matthew M. Van,Grubbs, Robert H.
supporting information; experimental part, p. 1261 - 1264 (2009/09/25)
Two triethoxysilyl-functionalized N-heterocyclic carbene ligands have been synthesized and used to prepare the corresponding second-generation ruthenium olefin metathesis catalysts. These complexes were then grafted onto silica gel, and the resulting materials were efficient heterogeneous catalysts for a number of metathesis reactions. The solid-supported catalysts were shown to be recyclable over a number of reaction cycles, and no detectable levels of ruthenium were observed in reaction filtrates (ruthenium concentration of filtrate 5 ppb).
