Palladium-catalyzed asymmetric allylic amination of racemic butadiene monoxide with isatin derivatives

Org Biomol Chem. 2015 May 28;13(20):5826-30. doi: 10.1039/c5ob00663e. Epub 2015 Apr 28.

Abstract

Isatins and their derivatives are important functional moities and building blocks in pharmaceutical and synthetic chemistry. Numerous enantioselective transformations at the C-3 carbonyl group have been well developed. However, the asymmetric substitution reaction with isatins and their derivatives as nucleophiles based on the free N-H groups has been less studied due to the relatively weaker nucleophilicity resulting from the two electron-withdrawing carbonyl groups. In this paper, a palladium-catalyzed asymmetric allylic amination of racemic butadiene monoxide with isatin derivatives using a chiral phosphoramidite olefin hybrid ligand has been successfully developed under mild conditions. A variety of chiral amino alcohols were afforded in 55-87% yields with 10/1->20/1 regioselectivity ratios and 80-97% ees.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes / chemistry*
  • Allyl Compounds / chemistry*
  • Amination
  • Catalysis
  • Epoxy Compounds / chemistry*
  • Isatin / chemistry*
  • Ligands
  • Molecular Structure
  • Palladium / chemistry*
  • Stereoisomerism

Substances

  • Alkenes
  • Allyl Compounds
  • Epoxy Compounds
  • Ligands
  • 3,4-epoxy-1-butene
  • Palladium
  • Isatin