
Tetrahedron Letters p. 4787 - 4790 (1990)
Update date:2022-08-06
Topics:
Witty
Fleet
Vogt
Wilson
Wang
Storer
Myers
Wallis
2-O-Trifluoromethanesulphonate esters of the four diastereomeric 3,5-di-O-benzyl-pentono-1,4-lactones gave, on treatment with potassium carbonate in methanol, efficient ring contraction to methyl oxetane-2-carboxylic esters. The stereochemistry at C-2 of
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