Enantiomerically enriched 1,2-diols can be prepared, in good enantiomeric excesses, by using a novel asymmetric dihydroxylation of enones with permanganate under phase-transfer conditions (see scheme: e.g. R1=nBu, R2=(p-OMe)C6H4). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2002/z19333_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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Bhunnoo et al. (2002) studied this question.