Synthesis and properties of phenothiazine derivatives. I. Synthesis and properties of bisoxytriazenes containing the phenothiazine fragment

3, 7-Bis(1-phenyl-3-hydroxytriazenyl)phenothiazine has been synthesized from phenothiazine. This compound decomposes to phenyl radicals, nitrogen and 3, 7-bisnitrosophenothiazine under the influence of nitroso compounds and oxidizing agents (PbO₂, Ag₂O). The reaction of bishydroxytriazenylphenothiazene with 2, 4, 6-tribromonitrosobenzene has been studied by EPR spectroscopy.N. P. Ogarev Mordov State University, Saransk 430000. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1284–1287, September, 1996. Original article submitted March 21, 1996.