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Title: Synthesis and investigation of mass spectra of 3-substituted-2-thioxo-imidazolidin-4-one derivatives
Authors: El-Fattah, M E Abd
Keywords: Imidazolidinones
Issue Date: Nov-2006
Publisher: CSIR
Series/Report no.: Int. Cl.<sup>8</sup> C07D
Abstract: The compounds 3-[(2, 4-disubstituted benzylidene)-amino]-2-thioxoimidazolidin-4-ones <b style="">2a, b</b> are prepared from cyclization of 2, 4-disubstituted benzaldehyde thiosemicarbazones<b style=""> 1a, b</b> with ethyl chloroacetate in presence of fused sodium acetate. Treatment of 3-[(2, 4)-disubstituted benzylidene)-amino]-2-thioxoimidazolidin-4-one <b style="">2</b> with acetic anhydride, benzyl chloride, diazonium chloride and aromatic aldehydes yielded the corresponding 1-acetyl-3-[(2, 4-diacetoxybenzylidene)-amino]-2-thioxoimidazolidin-4-one <b style="">3a</b>, 1-acetyl-3-[(4-<i style="">N,N</i>-dimethylaminobenzylidene)-amino]-2-thioxoimidazolidin-4-one <b style="">3b</b>, 1-benzyl-3-[(2, 4-disubstitutedbenzylidene)-amino]-2-thioxoimidazolidin-4-ones <b style="">4</b>, 3-{(2, 4-[dihydroxy]-5-arylazobenzylidene)-amino}-5-arylazo-2-thioxoimidazolidin-4-ones <b style="">5</b> and 3-[(4-dimethylamino-benzyli-dene)-amino]-5-arylidene-2-thioxoimidazolidin-4-ones <b style="">6</b> respectively. The mass spectral fragmentation patterns of some prepared compounds are investigated in order to elucidate the structure of the synthesized compounds.
Description: 2523-2533
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.45B(11) [November 2006]

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