Synlett 2013; 24(8): 947-950
DOI: 10.1055/s-0032-1316910
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© Georg Thieme Verlag Stuttgart · New York

Magnetically Recoverable Osmium Catalysts with Osmium–Diolate Esters for Dihydroxylation of Olefins

Ken-ichi Fujita*
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan   Fax: +81(29)8614577   eMail: k.fujita@aist.go.jp
,
Satoshi Umeki
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan   Fax: +81(29)8614577   eMail: k.fujita@aist.go.jp
,
Hiroyuki Yasuda
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan   Fax: +81(29)8614577   eMail: k.fujita@aist.go.jp
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Publikationsverlauf

Received: 26. Februar 2013

Accepted after revision: 18. März 2013

Publikationsdatum:
11. April 2013 (online)


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Abstract

We prepared magnetically recoverable osmium catalysts with stable osmium–diolate esters and applied them to the dihydroxylation of olefins. By employing 2 mol% of the magnetic osmium catalyst, the dihydroxylation reaction proceeded smoothly to provide the corresponding vicinal diol with a low level of osmium leaching. After completion of the dihydroxylation, the osmium catalyst was readily recovered by use of an external magnet and was recycled up to five times.