Tethered Aminohydroxylation: Dramatic Improvements to the Process
作者:Timothy J. Donohoe、Carole J. R. Bataille、William Gattrell、Johannes Kloesges、Emilie Rossignol
DOI:10.1021/ol070430v
日期:2007.4.1
[reaction: see text] Changing the identity of the N leaving group on a hydroxylamine-based reoxidant gives a dramatic improvement to the tetheredaminohydroxylationreaction. Using OCOC6F5 as a leaving group means that only 1 mol % of osmium is required and yields as high as 98% can be obtained. Acyclic homoallylic alcohols were substrates considered too unreactive for effective use in the tethered