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Molecules 2003, 8(5), 430-438; doi:10.3390/80500430
Article

Structures and Chemical Equilibria of Some N-Heterocycles Containing Amide Linkages

, * ,  and
Department of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, P.O. Box 426, Alexandria 21321, Egypt
* Author to whom correspondence should be addressed.
Received: 3 July 2002 / Revised: 12 January 2003 / Accepted: 15 April 2003 / Published: 31 May 2003
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Abstract

Structures and chemical equilibria of 5-carboxy-2-thiouracil (1), 5,6-diphenyl-3-hydroxy-1,2,4-triazine (2), 1-phenyl-3-methyl-5-pyrazolone (3) and 2-mercapto-4,6-dimethylpyrimidine hydrochloride (4) are reported. Their electronic transitions are assigned and pK values are evaluated and discussed.
Keywords: Chemical equilibria; 5-carboxy-2-thiouracil; synthesis; electronic transitions and pK values Chemical equilibria; 5-carboxy-2-thiouracil; synthesis; electronic transitions and pK values
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Masoud, M.S.; Abd El Zaher Mostafa, M.; Ahmed, R.H.; Abd El Moneim, N.H. Structures and Chemical Equilibria of Some N-Heterocycles Containing Amide Linkages. Molecules 2003, 8, 430-438.

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