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Synfacts 2008(1): 0110-0110  
DOI: 10.1055/s-2007-991448
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Thermosensitive Star-Polymer-Supported Gold Nanoclusters

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada
S. Kanaoka, N. Yagi, Y. Fukuyama, S. Aoshima*, H. Tsunoyama, T. Tsukuda, H. Sakurai
Osaka university, Institute for Molecular Science, Okazaki and CREST, Kawaguchi, Japan
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Publikationsverlauf

Publikationsdatum:
18. Dezember 2007 (online)

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Significance

Gold nanoclusters of <4 nm with a narrow size distribution were prepared and supported in thermosensitive vinyl ether star polymers obtained via living cationic polymerization of 2-(2-ethoxy)ethoxyethyl vinyl ether (EOEOVE). The star-polymer-supported gold nanoclusters were applied to the aerobic oxidation of benzylic alcohols and a primary aliphatic alcohol with KOH in water to give the corresponding carbonyl compounds in 71% to >99% yield. The star-polymer-supported gold catalyst was reused five times for the aerobic oxidation of benzyl alcohol without any significant loss of catalytic activity.