Osmium-catalyzed aminohydroxylation reactions are accelerated and expanded in scope by the use of olefinic substrates having ionic groups, either anionic or cationic. The use of ionic groups on olefinic substrates also extends the aminohydroxylatable positions of unsaturations to include &agr;,&bgr;, &bgr;,&ggr;, and &ggr;,&dgr; positions, with respect to such ionic groups. A mechanism for the disclosed acceleration and extension is provided.
On the Stereochemical Course of Self-Replication in Secondary Cycle Sharpless Aminohydroxylation
作者:Kilian Muñiz
DOI:10.1002/adsc.200404209
日期:2005.2
An investigation on a potential asymmetric self-replication process within the secondary cycle of Sharplessasymmetricaminohydroxylation is discussed. The reaction of two model olefins is investigated within this process and two different models for an asymmetric process are discussed. Analysis of the results on the basis of these models and a mathematical description for development of the enantiomeric