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Synfacts 2011(7): 0798-0798  
DOI: 10.1055/s-0030-1260528
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Semihydrogenation of Alkynes with a Pd/SiO2-DMSO Catalyst

Contributor(s): Yasuhiro Uozumi, Aya Tazawa
Y. Takahashi, N. Hashimoto, T. Hara, S. Shimazu, T. Mitsudome, T. Mizugaki, K. Jitsukawa, K. Kaneda*
Osaka University, Toyonaka and Chiba University, Japan
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Publication History

Publication Date:
17 June 2011 (online)

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Significance

Silica-supported palladium nanoparticles (Pd/SiO2 NPs) were prepared by mixing [Pd(NH3)4]˙H2O and silica gel followed by treatment with ethanol (eq.1). Pd/SiO2 NPs catalyzed the semihydrogenation of alkynes to afford the corresponding alkenes in 97-99% yield with high Z-selectivity (15 examples, eq. 2).