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 |
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Authors: | O Yu Smirnov A Yu Tyurin A M Churakov Yu A Strelenko V A Tartakovsky |
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Institution: | (1) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation |
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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.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 133–136, January, 2006. |
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Keywords: | benzotetrazines N-oxides 1 2 5-oxadiazoles 13C NMR spectroscopy |
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