Abstract
Nine new 2-amino-5-hydroxy-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitriles and eight 2-(cyanoamino)-4-hydroxypyrimidine-5-carbonitriles have been synthesized in a simple and convenient method by three-component condensation of aromatic aldehydes, ethyl cyanoacetate, and 3,5-diamino-1,2,4-triazole or cyanoguanidine hydrochloride in alkaline ethanol. All new synthesized compounds were characterized by nuclear magnetic resonance (NMR), infrared (IR), ultraviolet (UV), mass spectrometry (MS), and elemental analyses.
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Support of this investigation by Vali-E-Asr University is gratefully acknowledged.
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Ranjbar-Karimi, R., Beiki-Shoraki, K. & Amiri, A. Three-component synthesis of some 2-amino-5-hydroxy-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitriles and 2-(cyanoamino)-4-hydroxypyrimidine-5-carbonitriles. Monatsh Chem 141, 1101–1106 (2010). https://doi.org/10.1007/s00706-010-0371-8
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DOI: https://doi.org/10.1007/s00706-010-0371-8