Reaction of D-Glycals with Azidotrimethylsilane.

Abstract The treatment of 2,3,4,6-tetra- O -acetyl-1,5-anhydro- d - arabino -hex-1-enitol with azidotrimethylsilane by the aid of a catalytic amount of Yb(OTf) 3 afforded 2,4,6-tri- O -acetyl-2,3-dideoxy-α- d - erythro -hex-2-enopyranosyl azide in high yield.