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Synfacts 2010(4): 0495-0495  
DOI: 10.1055/s-0029-1219463
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Dihydroxylation of Olefins with a Dendrimer-Supported Osmium Catalyst

Contributor(s): Yasuhiro Uozumi, Yoshikazu Yamamoto
K.-i. Fujita*, T. Ainoya, T. Tsuchimoto, H. Yasuda
National Institute of Advanced Industrial Science and Technology, Tsukuba and Meiji University, Kawasaki, Japan
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Publication History

Publication Date:
22 March 2010 (online)

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Significance

Dendrimer-supported osmium ­catalyst 2 was prepared by the reaction of N,N,N′,N′-tetramethylethylenediamine with poly(benzyl ether) dendric bromide G3-Br, followed by treatment with potassium osmate (eq.1). The catalyst 2 promoted the dihydroxylation of olefins 3 to give the corresponding diol 4 in 86-94% yield (9 examples).