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2,6-二氨基-3,5-二硝基吡嗪-1-氧化物的超声快速有效合成研究
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摘要
报道了超声波作用下合成2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的方法。即以2,6-二氨基-3,5-二硝基吡嗪(ANPZ)为原料,三氟乙酸和双氧水为氧化剂,在超声的作用下,合成LLM-105。并探讨了超声功率、超声时间等因素对LLM-105合成的影响,确定了超声合成反应的最佳超声功率、超声时间等条件。在此条件下,产物LLM-105的纯度与得率均大于95%,成功将反应时间缩短了近80%,缩短至5h。从而解决了常规氮氧化反应合成时间长(约24 h)、效率低等问题。产物LLM-105采用核磁、液相色谱、扫描电镜及光学显微镜进行了结构与纯度表征。
2,6-diamino-3,5-dinitropyrazine-1-oxide(LLM-105) was synthesized from 2,6-diamino-3,5-dinitropyrazine(ANPZ) as starting material and trifluoroacetic acid(TCA) and hydrogen peroxide as oxidizer under the ultrasonic reaction conditions. The effect of ultrasonic power and reaction time on the yield and purity of LLM-105 were investigated, and the optimal reaction conditions were obtained. The experimental results indicated that the purity and yield all exceeded 95 % under the optimized condition. Meanwhile, compared with the traditional N-oxide synthesis~([1-2])(this step may take about 24 h to accomplish), our method obviously decreased the reaction time to 5h which was nearly shorten by 80 %. The final product was further characterized by nuclear magnetism resonance(NMR), liquid-phase chromatography(LC), scanning electronic spectroscopy(SEM) and optical spectra.
引文
[1]李海波,程碧波,李洪珍,聂福德,李金山,黄忠,刘世俊.有机化学,2007,27(1):17.
    [2]邓明哲,周杰文,王伯周,叶志虎,田战怀.含能材料,2013,21(3):294.

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