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Synthesis of 3‐(3,5‐dinitropyrazol‐4‐yl)‐4‐nitrofurazan and its salts
Author(s) -
Sheremetev Aleksei B.,
Yudin Igor L.,
Palysaeva Nadezhda V.,
Yu. Suponitsky Kyrill
Publication year - 2012
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.708
Subject(s) - chemistry , moiety , monoclinic crystal system , nitration , pyrazole , annulation , salt (chemistry) , nitro , ring (chemistry) , medicinal chemistry , stereochemistry , organic chemistry , crystal structure , catalysis , alkyl
The annulation reaction of vinamidinium salt containing nitrofurazanyl moiety at the β‐position gives access to the corresponding pyrazole. At nitration , two nitro groups were installed to the pyrazole ring. The synthesized 3‐(3,5‐dinitropyrazol‐4‐yl)‐4‐nitrofurazan 13 is strong NH acid and a new family energetic salts was prepared by direct neutralization with high nitrogen bases. Compound 13 crystallizes in the monoclinic space group P 2 1 / c , and charaterized by high density of 1.979 g/cm 3 (at 100 K). J. Heterocyclic Chem., (2012).