Dc. Dittmer et al., CONCOMITANT EPOXIDE DEOXYGENATION AND DEACETYLATION OF GLYCIDYL ACETATES INDUCED BY TELLURIDE ION, Journal of organic chemistry, 59(5), 1994, pp. 1004-1010
Treatment of glycidyl acetates with telluride ion (Te2-) produced by r
eduction of elemental Te with LiEt(3)BH yields allylic alcohols by los
s of the epoxide oxygen atom and the acetyl group from the ester. If t
he glycidyl acetate is disubstituted at C-3, a rearrangement to an iso
meric allylic alcohol competes with the deoxygenation-deacetylation. T
riethylborane, a byproduct in the reduction of Te, is believed to play
an important role as a Lewis acid since when it is absent or removed
by addition of fluoride ion the reaction is extremely slow.