作者:Venugopal Thottempudi、Jiaheng Zhang、Chunlin He、Jean'ne M. Shreeve
DOI:10.1039/c4ra10821c
日期:——
5,5′-Diamino-3,3′-azo-1,2,4-oxadiazole (3) was synthesized by reacting 3,5-diamino-1,2,4-oxadiazole with potassium permanganate in the presence of an organic solvent. Nitration of 5-amino-3-azo-1,2,4-oxadiazole gave rise to the 1,2,4-oxadiazolone (4) directly rather than the nitramine compound. Energetic salts of oxadiazolone 4 were prepared by treating with amine bases. These high nitrogen compounds were fully characterized using IR and multinuclear NMR spectroscopy, elemental analysis, and differential scanning calorimetry (DSC), and, in case of 3, with single crystal X-ray structuring. All the azo-substituted 1,2,4-oxadiazoles are impact insensitive materials.
5,5′-Diamino-3,3′-azo-1,2,4-oxadiazole (3) 是由 3,5-diamino-1,2,4-oxadiazole 与高锰酸钾在有机溶剂存在下反应合成的。5-amino-3-azo-1,2,4-oxadiazole 的硝化反应直接生成了 1,2,4-恶二唑酮 (4),而不是硝胺化合物。通过用胺碱处理,制备出了噁二唑酮 4 的高能盐。利用红外光谱、多核核磁共振光谱、元素分析和差示扫描量热法(DSC)对这些高氮化合物进行了全面鉴定,并对 3 进行了单晶 X 射线结构鉴定。所有偶氮取代的 1,2,4-恶二唑都是对冲击不敏感的材料。