A new procedure for the synthesis of 5(3)-nitroamino-1,2,4-triazole-3(5)-carboxylic acid and 5,5′ -bi(3-nitroamino-1,2,4-triazole) potassium salt has been developed. It includes cyclization of [2-(N2-nitro-carbamimidoyl) hydrazino]oxoacetic acid and 2,2′-bis(N 2-itrocarbamimidoyl)oxalohydrazide, respectively, which are prepared by reaction of 1-amino-2-nitroguanidine with oxalic acid. The reaction of 5(3)-nitroamino-1,2,4-triazole-3(5)-carbohydrazide with 1-methyl-2-nitro-1-nitrosoguanidine leads to N′ -(N 2-nitrocarbamimidoyl)-5(3)-nitroamino-1,2,4-triazole-3(5)-carbohydrazide whose intramolecular cyclization in the presence of bases may be regarded as a new method of synthesis of 5,5′-bi(3-nitroamino-1,2,4-triazole) salts.
一种合成 5(3)-硝基
氨基-
1,2,4-三唑-3(5)-
羧酸和 5,5′-双(
3-硝基
氨基-
1,2,4-三唑)
钾盐的新方法已经开发出来。其中包括[2-(N2-硝基
氨基甲
酰亚胺基)
肼]
草酰乙酸和 2,2′-双(N 2-硝基
氨基甲
酰亚胺基)草酰
肼的环化,它们分别由 1-
氨基-2-
硝基胍与
草酸反应制备。5(3)-nitroamino-1,2,4-triazole-3(5)-carbohydrazide 与 1-甲基-2-硝基-1-
亚硝基胍反应生成 N′ -(N 2-硝基
氨基甲
酰亚胺基)-5(3)-nitroamino-1,2,4-triazole-3(5)-carbohydrazide、4-三唑-3(5)-甲酰
肼,其在碱存在下的分子内环化可被视为合成 5,5′-双(
3-硝基
氨基-
1,2,4-三唑)盐的一种新方法。