Abstract
The reaction between acetoacetanilide and aromatic aldehydes (2,4-dimethoxybenzaldehyde, veratraldehyde and piperonal) under specified conditions yielded two types of conjugated ketoanilides in which the keto-groups are attached to olefinic linkages. The existence of these compounds predominantly in the intramolecularly hydrogen-bonded enol form has been well demonstrated from their IR, 1H NMR, and mass spectral data. Details on the formation of their complexes with Ni(II), Cu(II), and Zn(II) and their nature of bonding are discussed on the basis of analytical, IR, 1H NMR, and mass spectral data.
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