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Synfacts 2008(3): 0319-0319  
DOI: 10.1055/s-2008-1042667
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Silica-Supported Rhodium Catalyst for Hydrosilylation of Alkenes

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada
B. Marciniec*, K. Szubert, M. J. Potrzebowski, I. Kownacki, K. Łeszczak
Adam Mickiewicz University, Poznań and Center of Molecular and Macromolecular Studies, Łód, Poland
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Publication History

Publication Date:
21 February 2008 (online)

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Significance

Rhodium siloxide immobilized on silica support was prepared and used for hydro­silylation of alkenes as a recyclable catalyst. Thus, [Rh(µ-OSiMe3)(cod)]2 reacted with aerosil silica (Aerosil 200) in hexane or benzene at r.t. for 24 h to give the rhodium siloxide immobilized on silica support. Hydrosilylation of alkenes with hepta­methylhydrotrisiloxane was carried out with the heterogeneous Rh siloxide catalyst (0.01 mol% Rh) to afford the corresponding hydrosilylation products in 88-97% yield (4 examples; TOF = 147-162/min). The catalyst was reused 15-20 times without significant loss of catalytic activity.