The 4‐(p‐phenylazophenyl)semicarbazones of some carbonylic pyridine derivatives

The condensation products of rhodanine, 3-ethylrhodanine, 3-allylrhodanine, 3-phenylrhodanine and 3-carboxymethylrhodanine with 2-, 3and 4-iodobenzaldehyde and with 3-hydroxy-6-iodobenzaldehyde have been prepared for bacterial and fungicidal evaluation and for comparison with their bacteriostatic bromo-chloro-and fluoro-analogues. Condensations between the rhodanines and the iodobenzaldehydes were carried out in acid medium. The condensation of the rhodanines with 3-hydroxy-6iodobenzaldehyde were carried out in ammoniacal medium. Crystalline coloured condensation products were obtained in good yield. Attempts to condense the rhodanines with 2,6-di-iodo-3-hydroxybenzaldehyde and with 3-hydroxy-2,4,6-tri-iodo-benzaldehyde were unsuccessful. Steric factors due to flanking iodo substituents appear to prevent the reaction of the rhodanine with the formyl group of these hydroxy-di-and tri-iodobenzaldehyde.The synthesis of compounds of potential fungicidal activity 1.2 has been the subject of continued interest in this department with particular emphasis on condensation derivatives of rhodanine. Although rhodanine has been condensed with a wide selection of compounds including aliphatic 3, aromatic 4 9 5 heterocyclic 6-8 and polycyclic aldehydesg. 10 and also with

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The 4‐(p‐phenylazophenyl)semicarbazones of some carbonylic pyridine derivatives

Cited by 3 publications

References 13 publications

The Condensaton of Rhodanine and Derivatives with Phenoxyacetic Acids

The Condensaton of Rhodanine and Derivatives with Phenoxyacetic Acids

Fungitoxicity of rhodanine derivatives

The condensation of rhodanine and derivatives with aromatic aldehydes containing iodine

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