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Title: Synthesis and antioxidant activities of some 4-benzylidenamino-4,5-dihydro- 1<i>H</i>-1,2,4-triazol-5-one derivatives
Authors: Yüksek, Haydar
Kolaylı, Sevgi
Küçük, Murat
Yüksek, M Ozgün
Ocak, Ummuhan
Şahinbaş, Esra
Sivrikaya, Efecan
Ocak, Miraç
Keywords: Antioxidant activities
<i>p</i>K<sub>a</sub> values
Issue Date: Mar-2006
Publisher: CSIR
Series/Report no.: <b>Int</b>.<b>Cl</b>.<b><sup>7</sup> C 07 D</b>
Abstract: Eight 3-alkyl(aryl)-4-(3,4-dihydroxybenzylidenamino)-4,5-dihydro-1<i style="">H</i>-1,2,4-triazol-5-ones <b>2</b> having 4,5-dihydro-1<i>H</i>-1,2,4-triazol-5-one ring are synthesized by the reactions of 3-alkyl(aryl)-4-amino-4,5-dihydro-1<i>H</i>-1,2,4-triazol-5-ones <b style="">1</b> with 3,4-dihydroxy-benzaldehyde and their antioxidant activities are investigated. In addition, compounds <b style="">2b</b>, <b style="">2f</b> and <b style="">2h </b>are titrated potentiometrically with tetrabutylammonium hydroxide in non-aqueous solvents and the half-neutralization potential values and the corresponding <i>p</i>K<sub>a</sub> values are determined. The structures of new compounds are established from spectral data.
Description: 715-718
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.45B(03) [March 2006]

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