Chemistry of Heterocyclic Compounds

, Volume 54, Issue 11, pp 1045–1049 | Cite as

Nucleophilic substitution reactions of 1-methyl-4,5-dinitroimidazole with aqueous ammonia or sodium azide

  • Peng-Bao Lian
  • Xiao-Jie Guo
  • Jian-Long Wang
  • Li-Zhen ChenEmail author
  • Fan-Fan Shen

In this work, 5-amino-1-methyl-4-nitroimidazole was synthesized by amination reaction of 1-methyl-4,5-dinitroimidazole with aqueous ammonia in 95% yield. Meanwhile, one of its isomers, 4-amino-1-methyl-5-nitroimidazole as byproduct was obtained from the filtrate. Furthermore, nucleophilic substitution reaction of 1-methyl-4,5-dinitroimidazole with sodium azide gave 5-azido-1-methyl-4-nitroimidazole in 98% yield. The three compounds were characterized by IR, 1H and 13C NMR spectra, melting points, and elemental analysis. The structure of 4-amino-1-methyl-5-nitroimidazole was further confirmed by single crystal X-ray diffraction. These reactions indicate that the nitro group at position 5 of 1-methyl-4,5-dinitroimidazole is quite unstable, as well as partial substitution of nitro group at position 4 also occured in aqueous ammonia. Only one nitro group of the two is involved in nucleophilic substitution reaction in each case.


4-amino-1-methyl-5-nitroimidazole 5-amino-1-methyl-4-nitroimidazole 5-azido-1-methyl-4-nitroimidazole 1-methyl-4,5-dinitroimidazole nucleophilic substitution reaction 


We thank the Center of Testing and Analysis, Beijing University of Chemical Technology, for support.

Supplementary material

10593_2018_2389_MOESM1_ESM.pdf (307 kb)
ESM 1 (PDF 307 kb)


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Peng-Bao Lian
    • 1
  • Xiao-Jie Guo
    • 2
  • Jian-Long Wang
    • 1
  • Li-Zhen Chen
    • 1
    Email author
  • Fan-Fan Shen
    • 1
  1. 1.School of Chemical Engineering and TechnologyNorth University of ChinaTaiyuanChina
  2. 2.Shanxi DaYi Hospital (Shanxi Academy of Medical Sciences)TaiyuanChina

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