Vanadium-catalyzed selenide oxidation with in situ[2,3] sigmatropic rearrangement (SOS reaction): scope and asymmetric applications

Org Biomol Chem. 2004 May 7;2(9):1315-29. doi: 10.1039/b316502g. Epub 2004 Mar 31.

Abstract

A vanadium-catalyzed method for the oxidation of prochiral aryl, allylic selenides with tandem [2,3] sigmatropic rearrangement has been developed. This protocol has been screened on a series of substrates to test for its generality and effectiveness. The applicability of this methodology to the synthesis of enantiomerically enriched allylic alcohols has been studied on a series of chiral oxazole-containing systems with a diastereomeric ratio (d.r.) of up to 85 : 15. The chiral transfer observed in the allyl alcohol products is the result of a net 1,9- and/or 1,10-induction. Finally, the first example of a selenium-oxygen nonbonding interaction in oxazole-containing selenide appears to have been observed via X-ray crystal analysis.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Catalysis
  • Crystallography, X-Ray
  • Models, Molecular
  • Molecular Conformation
  • Organoselenium Compounds* / chemical synthesis
  • Organoselenium Compounds* / chemistry
  • Oxidation-Reduction
  • Stereoisomerism
  • Vanadium / chemistry*

Substances

  • Organoselenium Compounds
  • Vanadium