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Synfacts 2008(9): 0995-0995  
DOI: 10.1055/s-2008-1078649
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Recyclable Au Nanoparticle Supported Palladium(II) Catalyst

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada, Chung Keun Jin
Y.-Y. Lin, S.-C. Tsai, S. J. Yu*
National Chung Cheng University, Taiwan
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Publication History

Publication Date:
22 August 2008 (online)

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Significance

A gold nanoparticle supported Pd(II) complex was prepared and used in catalytic alkyne cyclotrimeriztion. Thiolate-stabilized Au nanoparticles were treated with dipyridylalkylthiol and the resulting Au-anchored dipyridyl groups coordinated with Pd(II) in a chelating fashion to afford a gold nanoparticle supported Pd(II) complex (RS-Au-Pd). RS-Au-Pd was a highly effective catalyst for the [2+2+2] cyclotrimerization of alkynes under microwave (MW) or thermal conditions to give the corresponding benzenes in 32-99% yield.