Tandem Oxidation Processes for the Preparation of Functionalized Cyclopropanes

Autor: Oswald, M. F., Raw, S. A., Taylor, R. J. K.
Zdroj: Organic Letters; October 2004, Vol. 6 Issue: 22 p3997-4000, 4p
Abstrakt: A novel manganese dioxide-mediated tandem oxidation process (TOP) has been developed which allows the direct conversion of allylic alcohols into cyclopropanes, the intermediate aldehydes being trapped in situ with a stabilized sulfur-ylide. This methodology has been applied successfully to a variety of allylic alcohols and to a formal synthesis of the simple, naturally occurring lignan, (±)-picropodophyllone.
Databáze: Supplemental Index