Gold-catalyzed intramolecular hydroamination of o-alkynylbenzyl carbamates: a route to chiral fluorinated isoindoline and isoquinoline derivatives

Org Lett. 2013 Feb 15;15(4):832-5. doi: 10.1021/ol3035142. Epub 2013 Jan 29.

Abstract

Enantiomerically pure fluorinated isoindoline and dihydroisoquinoline scaffolds have been prepared through a diastereoselective addition of fluorinated nucleophiles to Ellman's N-(tert-butanesulfinyl)imines followed by a sequence of Sonogashira cross-coupling/gold(I)-catalyzed cycloisomerization of the corresponding carbamate. A more favored 5-exo-dig mechanism was observed mainly due to an electronic effect of the fluorinated group.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amines / chemistry
  • Carbamates / chemistry*
  • Catalysis
  • Gold / chemistry*
  • Hydrocarbons, Fluorinated / chemical synthesis*
  • Hydrocarbons, Fluorinated / chemistry
  • Isoindoles / chemical synthesis*
  • Isoindoles / chemistry
  • Isoquinolines / chemical synthesis*
  • Isoquinolines / chemistry
  • Molecular Structure
  • Stereoisomerism

Substances

  • Amines
  • Carbamates
  • Hydrocarbons, Fluorinated
  • Isoindoles
  • Isoquinolines
  • Gold