Efficient palladium-catalyzed asymmetric allylic alkylation of ketones and aldehydes

Org Biomol Chem. 2011 Mar 21;9(6):1871-5. doi: 10.1039/c0ob00915f. Epub 2011 Jan 31.

Abstract

Palladium-catalyzed asymmetric allylic alkylation of ketones, via enamines generated in situ as nucleophiles, were carried out smoothly with chiral metallocene-based P,N-ligands. Under the same conditions, however, reactions of aldehydes could hardly be observed. Subsequently, this obstacle was resolved by using chiral metallocene-based P,P-ligands. Both ketones and aldehydes afforded excellent enantioselectivities with up to 98% ee and 94% ee, respectively.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aldehydes / chemistry*
  • Alkylation
  • Allyl Compounds / chemistry*
  • Catalysis
  • Ketones / chemistry*
  • Ligands
  • Molecular Structure
  • Palladium / chemistry*
  • Stereoisomerism

Substances

  • Aldehydes
  • Allyl Compounds
  • Ketones
  • Ligands
  • Palladium