Synthesis and reactions of sym-Triazolo-[1,5-a]-sym-Triazinonethiones

1-Carbethoxythiocarbamoyl-5-amino-1,2,4-triazoles and N-(1,2,4-triazol-5-yl)-N-carbethoxythioureas are formed in the reaction of 5-amino-1,2,4-triazoles with carbethoxyisothiocyanate. The triazole derivatives obtained are cyclized to substituted sym-triazolo-[1,5-a]-sym-triazines in alkaline media.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 276–280, February, 1973.See also [1,2].