Abstract
Treatment of 2-bromo-6(5H)-phenanthridone with nitrating mixture or fuming nitric acid results in nitration, debromination, and bromination in the 10-position. The brominating agent is apparently Br+, formed in the reaction mixture following replacement of the bromine in the 2-position by a nitro-group. Monocrystals of 2-bromo-1,4,8-trinitro-6(5H)-phenanthridinone and 10-bromo-2,4,8-trinitro-6(5H)-phenanthridinone have been subjected to x-ray diffraction examination. PMR has been used for structural identification.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 789–795, June, 1990.
We thank A. N. Sobolev for assistance in calculating the structure of (III).
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Andrievskii, A.M., Chelysheva, O.V., Poplavskii, A.N. et al. Synthesis and structure of bromonitro-6(5H)-phenanthridinones. Chem Heterocycl Compd 26, 658–663 (1990). https://doi.org/10.1007/BF00756418
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DOI: https://doi.org/10.1007/BF00756418