Synthesis of enantiopure substituted dihydrofurans via the reaction of (S)-glyceraldehyde acetonide- or Garner aldehyde acetonide-derived enones with sulfonium ylides

The reaction of sulfonium ylides with enones derived from 1,3-diketones or ethyl acetoacetate and (S)-glyceraidehyde acetonide or (S)-Garner aldehyde acetonide provides enantiopure polysubstituted dihydrofurans in moderate yields. (C) 2002 Elsevier Science Ltd. All rights reserved.