Abstract
Thermolysis of 6-azido-5-nitro-7-R-benzotetrazine 1,3-dioxides (R = H and Br) gave benzotetrazine 1,3-dioxides annulated with the furoxan ring at the C(5)-C(6) bond. According to the NMR data, these compounds at 297 K are equilibrium mixtures of two isomers with different positions of the N-oxide oxygen atom in the furoxan ring. Full assignment of signals in the 13C NMR spectra of the compounds obtained was accomplished.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 133–136, January, 2006.
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Smirnov, O.Y., Tyurin, A.Y., Churakov, A.M. et al. Annulated benzotetrazine 1,3-dioxides 1. [1,2,5]Oxadiazolo[3,4-f][1,2,3,4]benzotetrazine 2,4,7-and 2,4,9-trioxides. Russ Chem Bull 55, 137–140 (2006). https://doi.org/10.1007/s11172-006-0226-y
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DOI: https://doi.org/10.1007/s11172-006-0226-y