Abstract
The reaction of benzo[a]phenoxazin-9-one and its 5-sulfides with ethylenimine has given 11-ethyleneamino derivatives. It has been shown that in contrast to the arylamines, which enter position 5 of benzo[a]-phenoxazin-9-one, ethylenimine reacts at the quinoid nucleus of the phenoxazine system. Absorption spectra in the visible region for phenoxazinones substituted in the quinoid nucleus have been recorded.
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Afanas'eva, G.B. Reaction of benzo[α]Phenoxazin-9-one with ethylenimine. Chem Heterocycl Compd 6, 302–305 (1970). https://doi.org/10.1007/BF00471226
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DOI: https://doi.org/10.1007/BF00471226