Magnetically Recoverable Osmium Catalysts with Osmium-Diolate Esters for Dihydroxylation of Olefins
Ken-ichi Fujita*, Satoshi Umeki, Hiroyuki Yasuda
*National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan Email: k.fujitaaist.go.jp
K.-i. Fuhita, S. Umeki, H. Yasuda, Synlett, 2013, 24, 947-950.
DOI: 10.1055/s-0032-1316910 (free Supporting Information)
By employing 2 mol% of a magnetically recoverable osmium catalysts with stable osmium-diolate esters, dihydroxylation of alkenes proceeded smoothly to provide the corresponding vicinal diols 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.
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osmium catalysts, magnetically recoverable, Upjohn dihydroxylation reaction