Preparation of 8-Amido-2-dimethylamino-1,2,3,4-tetrahydro-2-dibenzofurans and several fluorinated derivatives via [3,3]-sigmatropic rearrangement of O-aryloximes

J Org Chem. 2003 Feb 7;68(3):770-8. doi: 10.1021/jo020600b.

Abstract

Methodology to prepare 8-amido-2-amino-1,2,3,4-tetrahydro-2-dibenzofurans, analogues with a fluorine substituent incorporated in the 6-, 7-, and 9-positions, and a difluorinated analogue with fluorines in the 6- and 9-positions is described. The tetrahydrodibenzofuran ring systems are prepared by acid-catalyzed [3,3]-sigmatropic rearrangement of O-aryloximes. Regioselective reactions to prepare the requisite O-aryloxime intermediates from commercially available fluorobenzene derivatives are discussed.

MeSH terms

  • Carbazoles / chemistry
  • Catalysis
  • Chromatography, High Pressure Liquid
  • Combinatorial Chemistry Techniques*
  • Fluorobenzenes / chemistry
  • Furans / chemical synthesis*
  • Hydrocarbons, Fluorinated / chemical synthesis*
  • Magnetic Resonance Spectroscopy
  • Molecular Structure
  • Oximes / chemistry*
  • Serotonin / chemistry
  • Stereoisomerism
  • Structure-Activity Relationship

Substances

  • Carbazoles
  • Fluorobenzenes
  • Furans
  • Hydrocarbons, Fluorinated
  • LY 344864
  • Oximes
  • Serotonin