Diastereoselective synthesis of delta-aminoacids through domino Ireland-Claisen rearrangement and Michael addition

Org Lett. 2008 May 1;10(9):1687-90. doi: 10.1021/ol8001464. Epub 2008 Apr 10.

Abstract

A novel domino reaction--stereoselective Ireland-Claisen rearrangement and asymmetric Michael addition--is described. A protocol starting from Baylis-Hillman adducts 3a-f using chiral lithium amide affords optically active gamma-substituted delta-amino acids 4a-f with high diastereoselectivities and enantioselectivities. The acid can be isolated easily from large-scale reactions and transformed to 2,3-disubstituted piperidines 11 or 2-substituted nipecotic acid derivates 12.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acids / chemical synthesis*
  • Amino Acids / chemistry
  • Crystallography, X-Ray
  • Molecular Structure
  • Stereoisomerism

Substances

  • Amino Acids