Fragmentation of carbohydrate anomeric alkoxyl radicals: a new synthesis of 1,1-difluoro-1-iodo alditols

Org Lett. 2003 Oct 30;5(22):4171-3. doi: 10.1021/ol035611l.

Abstract

[reaction: see text]. The beta-fragmentation of 2,2-difluoro-saccharide anomeric alkoxyl radicals, generated under oxidative condition by treatment of the respective alcohols with (diacetoxyiodo)benzene (DIB) and iodine, afforded 1,1-difluoro-1-iodo alditols in high yield. The reactivity of the fluorinated radical generated by rupture of the C-I bond has been preliminarily assessed by reductive deiodination with tributyltin hydride/AIBN and intermolecular allylation using the Keck reaction.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alcohols / chemistry*
  • Fluorine / chemistry
  • Hydrocarbons, Halogenated / chemical synthesis*
  • Iodine / chemistry
  • Magnetic Resonance Spectroscopy
  • Molecular Structure
  • Monosaccharides / chemistry*
  • Sugar Alcohols / chemical synthesis*

Substances

  • Alcohols
  • Hydrocarbons, Halogenated
  • Monosaccharides
  • Sugar Alcohols
  • alkoxyl radical
  • Fluorine
  • Iodine