5-Oxo and 7-oxo derivatives of [1, 2, 4] triazolo-[1, 5-a] pyrimidine: characterization and theoretical study

…, JM Salas, M Quirós, J Molina, R Faure

文献索引：Abul Haj; Salas; Quiros; Molina; Faure Journal of Molecular Structure, 2000 , vol. 519, # 1-3 p. 165 - 172

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被引用次数: 22

摘要

4, 5-Dihydro-5-oxo-[1, 2, 4] triazolo-[1, 5-a] pyrimidine (5HtpO) and 4, 7-dihydro-7-oxo-[1, 2, 4] triazolo-[1, 5-a] pyrimidine (7HtpO) have been synthesized by the condensation of 3- amino-[1, 2, 4] triazole with a reagent bearing the three carbon atoms that close the six- membered ring in a strongly acidic (7HtpO) or strongly basic (5HtpO) medium. The crystal structures of these compounds have been determined by X-ray diffraction, exhibiting the ...