Osmium tetroxide-(QN)2PHAL in an ionic liquid: a highly efficient and recyclable catalyst system for asymmetric dihydroxylation of olefins

  • Chem Commun (Camb). 2002 Dec 21:(24):3038-9. doi: 10.1039/b210104c.
Choong Eui Song  1 ,  Da-un Jung ,  Eun Joo Roh ,  Sang-gi Lee ,  Dae Yoon Chi
Affiliations
  • 1. Life Sciences Division, Korea Institute of Science and Technology, PO Box 131, Cheongryang, Seoul 130-650, Korea.
PMID: 12536805 DOI: 10.1039/b210104c
Abstract

In Os-catalysed asymmetric dihydroxylation using NMO as a co-oxidant, the combination of an ionic liquid and the new bis-cinchona alkaloid 2 generated in situ from (QN)2PHAL during reaction provided a simple and practical approach to the recycling of both catalytic components (osmium tetraoxide and chiral ligand).

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