CONCOMITANT EPOXIDE DEOXYGENATION AND DEACETYLATION OF GLYCIDYL ACETATES INDUCED BY TELLURIDE ION

Citation
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
Citations number
48
Categorie Soggetti
Chemistry Inorganic & Nuclear
ISSN journal
00223263
Volume
59
Issue
5
Year of publication
1994
Pages
1004 - 1010
Database
ISI
SICI code
0022-3263(1994)59:5<1004:CEDADO>2.0.ZU;2-B
Abstract
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.