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Synfacts 2006(2): 0180-0180  
DOI: 10.1055/s-2005-921772
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

A Highly Active and Reusable Heterogeneous Ruthenium Catalyst

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada, Tomohiko Beppu
L. Li, J.-l. Shi*
Shanghai Institute of Ceramics, P. R. of China
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Publication History

Publication Date:
23 January 2006 (online)

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Significance

The Grubbs-type Ru carbene complex anchored on the mesoporous silica material (SBA-15) was prepared and applied to the olefin metathesis reaction. Of the immobilized ligands, the mesoporous silica-supported catalyst 1-SBA-15 was found to give high catalytic activity. The ring-closing metathesis reaction of diallylmalonate took place in the presence of 1-SBA-15 to give cyclopent-3-ene-1,1-dicarboxylic acid diethyl ester in 98% yield. The catalyst 1-SBA-15 was reused five times without any loss of reactivity (see scheme). Under this reaction conditions, no Ru leaching was observed (ICP analysis). Five substrates were examined (82-100% yield).