Abstract
Nitration of 2-amino-, 2-N-methylamino-, and 1-amino-phenazine resulted in the formation of 2-amino-1-nitro-, 2-N-methylamino-1-nitro-, and 1-amino-4-nitro-phenazine, respectively. Nitration of 2-aminophenazine was shown to proceed via the intermediate nitramine, which was isolated and identified. 2-Hydroxy-1-nitrophenazine was found to exist in the solid state exclusively in the hydroxy form, and 4-nitro-1(5H)-phenazinone was the only solid obtained on acidification of a 1-hydroxy-4-nitrophenazine salt solution.
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