Tetrahedron Letters p. 1161 - 1164 (1991)
Update date:2022-08-04
Topics:
Assmann
Debaerdemaeker
Friedrichsen
The reaction of the transient furoisoxazole 4 with dimethyl acetylenedicarboxylate results in the formation of oxepine 9k. The boat-shaped structure of 9k has been confirmed by X-ray crystallography. The experimental findings are in accord with quantum chemical calculations (AM1, PM3).
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