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Synfacts 2008(1): 0099-0099  
DOI: 10.1055/s-2007-991458
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

[Rh-Pd] Ionic Gel-Soaked Bimetallic Catalyst

Contributor(s): Yasuhiro Uozumi, Yohei Oe
C. Thiot, M. Schmutz, A. Wagner, C. Mioskowski*
Université Louis Pasteur and Novalyst Discovery, Illkirch-Graffenstaden, ICS-CNRS UPR22, Strasbourg, France
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Publication History

Publication Date:
18 December 2007 (online)

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Significance

The [Rh-Pd] ionic gel-soaked bimetallic catalyst for the one-pot hydrosilylation/Hiyama cross-coupling reactions was described. Thus, the reaction of Merrifield resin 1 with Et3N, followed by the anion exchange of 2 with NaI afforded the polyionic iodide gel 3. The polyionic iodide gel 3 was treated with RhCl(PPh3)3 and Pd(OAc)2 to provide the [Rh-Pd] bimetallic catalyst 4. The one-pot synthesis of E-disubstituted alkene via hydrosilylation/Hiyama cross-coupling reaction was carried out in dioxane in the presence of 4 and subsequent addition of TBAF to give the corresponding E-alkenes in 50-95% yield.