The intramolecular cyclization reaction of picrylhydrazone into an indazole derivative was systematically studied. The optimized conditions, mechanism and the generality of the cyclization reaction from picrylhydrazone to indazole were investigated. Picrylhydrazones 1a–6a and indazole derivatives 1b and 3b–7b were synthesized through a one-step reaction and the crystal structures of 2a, 4a and 5b were
系统地研究了苦瓜into到
吲唑衍
生物的分子内环化反应。研究了从
吡hydr到
吲唑环化反应的优化条件,机理和一般性。通过一步反应合成了
吡啶甲hydr 1a-6a和
吲唑衍
生物1b和3b-7b,并通过单晶X射线衍射分析表征了2a,4a和5b的晶体结构。在所有化合物中,
吲唑衍
生物表现出24–341 ms -1的增加(0.3–4.3%),0.6–3.1 GPa(2.2–14.3%)和9–82°C(5.0–44.0%)的爆震性能和热稳定性以及降低4–10 J(15.4–33.3%) )和50-120 N(16.1-50.0%)的机械敏感性(与
甲基吡啶并相比)。此外,通过指纹图谱,Hirshfeld表面和爆炸特性的组合证明了结构与属性的关系。所有这些结果表明,该研究可以丰富高能材料设计的未来前景。