JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

Synthèse des spirocyclopropanes via la cycloaddition dipolaire-1,3 du diazoacétate d’éthyle avec les arylidènes d’indan1’,3’-dione

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Spiro-∆1pyrazolines 3a-e have been synthetized by 1,3-dipolar cycloaddition of some arylidenes of indan-1’,3’-dione 1a-e with ethyl diazoacetate 2. On heating under reflux, the spiroadducts 3a-e lose nitrogen molecule, thus being converted into spirocyclopropanes 4a-e. The proposed regio- and stereochemistry of cycloadducts 3a-e and 4a-e have been elucidated by 1H and 13C NMR.

N. Wannassi, M.M. Rammah, M.B.r Rammah, K. Ciamala

1,3-dipolar cycloaddition, ethyl diazoacetate, spiro-pyrazolines, spirocyclopropanes

Pages 117-125

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