Conclusions
The UV irradiation of the anils polyfluoroaromatic ketones in strongly acidic media leads to photochemical cyclization to phenanthridines. The insertion of substituents into the anil molecule lowers the phototransformation rate.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1606–1611, July, 1980.
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Danilenko, N.I., Fomenko, T.V., Korobeinicheva, I.K. et al. Photochemical cyclization of anils of polyfluoroaromatic ketones. Russ Chem Bull 29, 1149–1154 (1980). https://doi.org/10.1007/BF00949173
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DOI: https://doi.org/10.1007/BF00949173