anti-Selective, catalytic asymmetric vinylogous Mukaiyama Mannich reactions of pyrrole-based silyl dienolates with N-aryl aldimines

J Org Chem. 2011 Apr 1;76(7):2248-52. doi: 10.1021/jo1021234. Epub 2011 Mar 7.

Abstract

Pyrrole-based silyl dienolates undergo asymmetric vinylogous Mukaiyama Mannich reactions with a series of N-aryl aldimines in the presence of the Hoveyda-Snapper amino acid-derived silver(I) catalysts. The Mannich products-α,β-unsaturated δ-amino-γ-butyrolactams-are typically obtained in high yields, excellent γ-site selectivities and anti-diastereoselectivities, and up to 80% enantioselectivity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aldehydes / chemistry*
  • Catalysis
  • Imines / chemistry*
  • Molecular Structure
  • Pyrroles / chemistry*
  • Silver / chemistry*
  • Stereoisomerism
  • Vinyl Compounds / chemistry*

Substances

  • Aldehydes
  • Imines
  • Pyrroles
  • Vinyl Compounds
  • Silver