A series of novel symmetrical 2,5‐difunctionalized 1,3,4‐oxadiazole derivatives of pharmacological significance have been synthesized. The obtained compounds were screened for their in vitro antimicrobial activities against Gram‐negative (Escherichia coli and Salmonella typhimurium) and Gram‐positive bacteria (Staphylococcus aureus, Enterococcus faecium, and Streptococcus agalactiae or group B Streptococcus)
Facile synthesis of nitroamino-1,3,4-oxadiazole with azo linkage: a new family of high-performance and biosafe energetic materials
作者:Shreyasi Banik、Pradeep Kumar、Vikas D. Ghule、Shweta Khanna、Dharmaraja Allimuthu、Srinivas Dharavath
DOI:10.1039/d2ta07372b
日期:——
Energetic materials serve as remarkable fuel/propellants for space shuttles, and their utility in civil and military applications is vast. The emergence of new and powerful energetic materials possessing signature chemical structures such as nitroaromatics and oxygen/nitrogen-rich heterocyclic scaffolds continues to evolve. Nitrogen-rich materials add to the advantage of being “green” energetic materials
高能材料可用作航天飞机的卓越燃料/推进剂,它们在民用和军用应用中的用途非常广泛。具有特征化学结构的新型且强大的高能材料(如硝基芳烃和富氧/富氮杂环支架)的出现不断发展。富氮材料通过消除释放到大气中的氧化性二氧化碳,增加了成为“绿色”高能材料的优势。在这里,我们首次报道了富氮(5,5'-二硝基氨基-3,3'-azo-1,3,4-恶二唑(5) 及其从可商购的廉价起始材料以定量产率获得的高能盐。我们的分子组具有比基准炸药 HMX、ε-CL-20 和 ICM-101 更出色的能量特性。其中,化合物5表现出非凡的能量特性,在 298 K 时具有 1.97 g cm -3的显着密度、高正生成热(405.7 kJ mol -1)、高爆速、高压力(9358 ms -1和 39.1 GPa )、良好的热稳定性 (185 °C) 以及可接受的冲击和摩擦敏感性 (6 J 和 160 N)。化合物5被认为是一种潜在的不太敏感的