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Synfacts 2008(12): 1340-1340  
DOI: 10.1055/s-0028-1083561
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Dihydroxylation of Olefins with Polymer-Supported Osmium Catalyst

Contributor(s): Yasuhiro Uozumi, Yutaka Matsuura
B.-H. Jun, J.-H. Kim, J. Park, H. Kang, S.-H. Lee*, Y.-S. Lee*
Seoul National University and Catholic University of Daegu, Gyeongsan, Korea
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Publikationsdatum:
20. November 2008 (online)

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Significance

A polystyrene surface-grafted ­imidazolium resin-supported osmium complex (PS-sg-IM Os) 1 was prepared by treatment of PS-sg-IM with K2OsO4×2H2O in water for two days (eq. 1). Catalyst 1 was characterized by IR, FE-SEM, EDX, and ICP. The dihydroxylation of various olefines 2 with N-methylmorpholine N-oxide (NMO) took place in the presence of 1.0 mol% Os of catalyst 1 in water-acetone (1:3) to give the corresponding diols 3a-f in 91-95% yield (eq. 2).