Nickel-catalyzed enantioselective three-component coupling of bis-1,3-dienes, aldehydes, and dimethylzinc

J Org Chem. 2005 Oct 14;70(21):8605-8. doi: 10.1021/jo051283m.

Abstract

Nickel-catalyzed three-component coupling of bis-1,3-dienes, aldehyde, and dimethylzinc was investigated. In the presence of catalytic amounts of Ni(acac)2 and PPh3, bis-1,3-dienes smoothly react with an aldehyde and dimethylzinc via intramolecular cyclodimerization of bis-1,3-diene moiety. The reaction proceeds through formation of a cyclic bis-allylnickel complex, insertion of an aldehyde, and addition of dimethylzinc to the resulting oxanickellacycle intermediate. An enantioselective coupling was also achieved by the use of a chiral monodentate phosphine ligand, H-MOP.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aldehydes / chemistry*
  • Alkenes / chemistry*
  • Catalysis
  • Methane / chemistry*
  • Molecular Structure
  • Nickel / chemistry*
  • Organometallic Compounds / chemistry*
  • Stereoisomerism
  • Zinc / chemistry*

Substances

  • Aldehydes
  • Alkenes
  • Organometallic Compounds
  • Nickel
  • dimethylzinc
  • Zinc
  • Methane