Organocatalytic asymmetric synthesis of chiral pyrrolizines by cascade conjugate addition-aldol reactions

Org Lett. 2010 Oct 1;12(19):4352-5. doi: 10.1021/ol101811c.

Abstract

As the first N-centered heteroaromatic nucleophile for organocatalytic cascade reactions, pyrroles underwent the enantio- and diastereoselective organocatalytic cascade conjugate addition-aldol reactions of α,β-unsaturated aldehydes that afford the highly functionalized chiral pyrrolizines bearing three consecutive stereocenters in good yields, high enantioselectivities (90-98% ee), and excellent diastereoselectivities (>20:1 dr in all cases).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aldehydes / chemistry*
  • Catalysis
  • Molecular Structure
  • Pyrroles / chemical synthesis*
  • Stereoisomerism

Substances

  • Aldehydes
  • Pyrroles
  • 3-hydroxybutanal