title: Highly efficient catalytic asymmetric epoxidation of allylic alcohols by an oxovanadium-substituted polyoxometalate with a regenerative TADDOL-derived hydroperoxide.
abstract: The oxovanadium(IV) sandwich-type POM catalyzes the chemo-, regio-, and stereoselective epoxidation of allylic alcohols by chiral hydroperoxides with very high catalytic efficiency (up to 42 000 TON), a potentially valuable oxidation for the development of sustainable processes. By using the sterically demanding, TADDOL-derived hydroperoxide TADOOH as the chiral oxygen source, enantiomeric ratios (er) of up to 95:5 have been achieved.
authors.affiliation: Institute of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany. adam@chemie.uni-wuerzburg.de
authors.forename: Waldemar
authors.initials: W
authors.lastname: Adam
authors.forename: Paul L
authors.initials: PL
authors.lastname: Alsters
authors.forename: Ronny
authors.initials: R
authors.lastname: Neumann
authors.forename: Chantu R
authors.initials: CR
authors.lastname: Saha-Möller
authors.forename: Dieter
authors.initials: D
authors.lastname: Seebach
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang