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Effect of dimethoxyethane in Yb(OTf)3-promoted glycosidations

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
45
Issue
23
Identifiers
DOI: 10.1016/j.tetlet.2004.04.046
Keywords
  • Dimethoxyethane
  • Ytterbium(Iii) Triflate
  • α-Selective Glycosidation

Abstract

Abstract 1,2-Dimethoxyethane (DME) is shown to be a suitable co-solvent for sensibly improving the α-selectivity of glycosidations performed with trihaloacetimidate donors. This solvent works equally well by using either moisture stable Yb(OTf) 3 or standard TMSOTf as the promoters.

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