Synthesis and mass spectral fragmentation patterns of some thiazole and 2-thioxo-imidazolidin-4-one derivatives
Egyptian Journal of Chemistry. 2006; 49 (2): 225-240
in En
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| ID: emr-76539
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ABSTRACT
2-[[5-ARYL-THIAZOL-2-YL]-hydrazonomethyl-phenols [2a, b] and 3-[[2-hydroxybenzylidiene]-amino]-2-thioxo-imidazolidin-4-one [3] were prepared via cyclization of salicylaldehydethiosemicarbazone [1] with omega [small latter]-bromomethyl aryl ketones and ethyl chloroacetate in presence of fused sodium acetate. Reaction of 3 with hydrazine hydrate, acetic anhydride, benzaldehyde, ethyl iodide, methyl acrylate and diazonium chloride yielded the corresponding salicylaldazine [4], 1-acetyl-3-[[2-acetoxybenzylidene]-amino]-2-thioxoimidazolidin-4-one [5], 3-[[2-hydroxybenzylidene]-amino]-5-benzylidene-2-thioxo-imidazolidin-4-one [6], 1-substituted-3-[[2-hydroxybenzylidene]-amino]-2-thioxo-imidazolidin-4-ones [8 and 9] and 3-[[5-phenylazo-2-hydroxybenzylidene]-amino]-2-thioxo-imidazolidin-l-one [10]. The mass spectral fragmentation patterns of the compounds are described
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Index:
IMEMR
Main subject:
Mass Spectrometry
/
Thiazoles
/
Thiosemicarbazones
Language:
En
Journal:
Egypt. J. Chem.
Year:
2006