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Process of preparing 2,2'-(1-methyl-1,2-ethanediylidene)bis{hydrazine carboximidamide}
Process of preparing 2,2'-(1-methyl-1,2-ethanediylidene)bis{hydrazine carboximidamide}
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机译:2,2'-(1-甲基-1,2-乙二亚甲基)双{肼羧酰亚胺酰胺}的制备方法
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摘要
The invention concerns a process for preparing 2,2'-(1-methyl-1,2-ethanediylidene)bisÄhydrazine carboximidamideÜ comprising the steps of : a) reacting aminoguanidine hydrochloride with methylglyoxal aldehyde or methylglyoxal dimethyl acetal in an acidic aqueous reaction medium to produce 2,2'-(1-methyl-1,2-ethanediylidene)bisÄhydrazine carboximidamideÜ; and b) purifying the 2,2'-(1-methyl-1,2-ethanediylidene)bisÄhydrazine carboximidamideÜ by recrystallization from an acidic aqueous medium.
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