Tetrahedron Letters p. 1245 - 1246 (1991)
Update date:2022-08-11
Topics:
Orlek
Wadsworth
Wyman
King
The dipolar cycloaddition reaction of α-methylene butyrolactone and N-benzyl azomethine ylid (5) affords the spirolactone (2) which rearranges to give ethyl 1-azabicyclo[2.2.1]hept-4-yl carboxylate (1) in excellent overall yield.
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