Abstract
Thermolysis of 1-arylthio-2-azidoanthraquinones in DMSO at 150 °C afforded substituted 5H-naphtho[2,3-c]phenothiazine-8,13-diones. These compounds were also formed upon photolysis of azides at 77 K and were prepared in quantitative yields by the reactions of 1-arylthio-2-azidoanthraquinones with KOH in DMSO at 20 °C.
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Klimenko, L.S., Pritchina, E.A. & Gritsan, N.P. Synthesis of 5H-naphtho[2,3-c]phenothiazine-8,13-diones from 1-arylthio-2-azidoanthraquinones. Russian Chemical Bulletin 50, 678–681 (2001). https://doi.org/10.1023/A:1011321114174
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DOI: https://doi.org/10.1023/A:1011321114174