Answers are grounded in this paper and cite their sources.
Treatment of 6-hydroxy-5-phenylazo-2-thioxo-4(1H)-pyrimidinone 1 with a series of hydrazonoyl halides 2 and N,2-diaryl-diazinecarbohydrazonoyl halides 9 in dioxane in the presence of triethylamine under reflux furnishes 6-phenylazo and 3,6-bis(arylazo)-7-hydroxy-1H-[1,2,4]triazolo[4,3-a]pyrimidin-5(4H)-one derivatives 7 and 10, respectively. The biological activities of the products were evaluated.
No takes yet. Share an insight, caveat, or question.
Sayed M. Riyadh (2005) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: