Tetrahedron Letters p. 6657 - 6660 (1999)
Update date:2022-07-29
Topics:
Cordero, Franca M.
Barile, Ingrid
De Sarlo, Francesco
Brandi, Alberto
N-Alkyl 5-spirocyclopropaneisoxazolidines rearrange to tetrahydropyridone derivatives by heating. The presence of a phenyl ring on the nitrogen atom significantly reduces the rearrangement temperature. This effect is enhanced by electron-donating substituents and reduced by electron- withdrawing substituents on the phenyl ring.
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