L. V. Ektova, F. A. Zhuravlev, “A Smiles Rearrangement as an Intermediate Step in the Formation of 8-Bromo-7-hydroxy-<i>N</i>-(4’ -<i>N</i>,<i>N</i>-diethylaminophenyl)-12<i>H</i>-benzo[<i>b</i>]phenothiazine-6,11-quinone 6-lmine from 2-(2’ -Aminophenylthio)-6-bromo-5-hydroxy-<i>N</i>-(4-/V,/V-diethylaminophenyl)-1,4-naphthoquinone 4-lmine”, Mendeleev Commun., 3:1 (1993), 23–24