Control of four stereocenters in an organocatalytic domino double Michael reaction: efficient synthesis of multisubstituted cyclopentanes

Org Lett. 2008 Aug 21;10(16):3425-8. doi: 10.1021/ol801246m. Epub 2008 Jul 11.

Abstract

A highly enantioselective and diastereoselective domino organocatalytic double Michael reaction which provides expedited access to multifunctionalized five-membered rings catalyzed by 9-amino-9-deoxyepiquinine (V) has been developed. Simple operational procedures, high yields (81-92%), excellent enantioselectivity (90-97% ee), diastereoselectivities (95:5->99:1 dr), and immense potential of synthetic versatility of the products render this new methodology highly appealing for asymmetric synthesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Crystallography, X-Ray
  • Cyclopentanes / chemical synthesis*
  • Cyclopentanes / chemistry
  • Models, Molecular
  • Molecular Structure
  • Quinolizines / chemistry*
  • Stereoisomerism

Substances

  • 9-amino-9-deoxyepiquinine
  • Cyclopentanes
  • Quinolizines