Chemistry of Heterocyclic Compounds

, Volume 10, Issue 3, pp 302–306 | Cite as

Research on the chemistry of phenoxazines

VII. Reactions and properties of resorufin and some of its derivatives
  • G. B. Afanas'eva
  • T. S. Viktorova
  • K. I. Pashkevich
  • I. Ya. Postovskii


Resorufin (7-hydroxy-3-phenoxazinone) reacts with thiophenols to give 2,8-di(arylthio) derivatives. The site of entry of the nucleophilic residues indicates protonation of resorufin at the ring nitrogen atom. The changes in the absorption spectra of the arylthio derivatives of resorufin in the visible region as a function of the pH of the solution are associated with the acid-base dissociation of these compounds with respect to the hydroxyl group. The ionization constants of some 2,8- and 2,4,6,8-tetrasubstituted resorufin derivatives were measured.


Nitrogen Hydroxyl Organic Chemistry Absorption Spectrum Nitrogen Atom 
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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • G. B. Afanas'eva
    • 1
  • T. S. Viktorova
    • 1
  • K. I. Pashkevich
    • 1
  • I. Ya. Postovskii
    • 1
  1. 1.S. M. Kirov Ural Polytechnic InstituteSverdlovsk

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