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Synfacts 2010(9): 1079-1079  
DOI: 10.1055/s-0030-1257976
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Chirality-Switchable Polymeric Catalysts for Hydrosilylation

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada
T. Yamamoto, T. Yamada, Y. Nagata, M. Suginome*
Kyoto University and CREST, Japan Science and Technology Agency, Kyoto, Japan
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Publication History

Publication Date:
23 August 2010 (online)

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Significance

A polyquinoxaline-based helical polymer ligand bearing both helical-sense-determining chiral side chains and diarylphosphine side chains, (R)-P(950*/0/50), exhibited solvent-­dependent and reversible formation of P- or M-helical forms. Palladium complexes of P- and M-helical (R)-P(950*/0/50) catalyzed the hydrosilylation of styrene to give (S)- and (R)-1-trichlorosilyl-1-phenylethane, respectively.