Abstract

A three-component reaction between 4-amino-6-methyl-3-thioxo-3,4-dihydro-2H-[1,2,4]triazin-5-one, ammonium thiocyanate and aroyl chlorides in the presence of N-methylimidazole to afford the [1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-4-ones in excellent yields is described.

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