Etude du couplage 2J(N15?H) en série hétérocyclique. Application à la détermination des constantes d'équilibres prototropiques rapides |
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Authors: | A Maquestiau Y Van Haverbeke R N Muller |
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Abstract: | The fast tautomeric equilibrium of (N15)-4-phenylisoxazolin-5-one ( 2 ) has been investigated by a study of 2J(N15? H3) coupling. Comparison of the observed values for 2 and for the two fixed forms (N15)-2-methyl-4-phenylisoxazolin-5-one ( 3 ) and (N15)-4-phenyl-5-methoxyisoxazol ( 4 ) indicates a considerable amount of enolic type structure for 2 in basic media. |
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