Palladium-catalyzed allylic cross-coupling reactions of primary and secondary homoallylic electrophiles

J Am Chem Soc. 2012 Jul 18;134(28):11408-11. doi: 10.1021/ja305403s. Epub 2012 Jul 6.

Abstract

The Pd(0)-catalyzed allylic cross-coupling of homoallylic tosylate substrates using boronic acids and pinacol esters is reported. The reaction uses 2-(4,5-dihydro-2-oxazolyl)quinoline (quinox) as a ligand and is performed at ambient temperature. The scope of the reaction is broad in terms of both the boronate transmetalating reagent and the substrate and includes secondary tosylates. Mechanistic studies support an alkene-mediated S(N)2-type stereoinvertive oxidative addition of unactivated primary and secondary alkyl tosylates.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Catalysis
  • Palladium / chemistry*
  • Temperature

Substances

  • Palladium