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Synfacts 2007(5): 0553-0553  
DOI: 10.1055/s-2007-968484
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Amphiphilic Polymer-Supported Phosphine-Rh Complexes

Contributor(s): Yasuhiro Uozumi, Hiroe Takenaka
M. Bortenschlager, N. Schöllhorn, A. Wittmann, R. Weberskirch*
TU München, Garching, Germany
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Publikationsdatum:
24. April 2007 (online)

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Significance

Amphiphilic polymer-supported triarylphosphine ligands A and B were designed and prepared in order to use them in a water-based biphasic catalytic system. Thus, polymeric rhodium complexes of A and B prepared in situ by mixing the polymeric ligands and [Rh(acac)(CO)2](P/[Rh] = 5:1) were applied to hydroformylation of octene under aqueous conditions [water-substrate(product) biphasic system] with TOFs of up to 3700 (with A) and 1630 (with B), respectively. The hydroformylation reactions with polymers C and D, which were not functionalized with phosphino groups, in the presence of [Rh] and TPPTS exhibited much lower catalytic performance.