Identity of a Purple Dye Formed by Peroxidic Oxidation of p-Aminophenol at Low pH

Leonid Lerner

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    The structure of a colored intermediate commonly formed in the oxidation of p-aminophenol at low pH is established by analysis of H NMR and UV/vis spectra, kinetics, and molecular modeling, following a new method for synthesizing the dye in high concentrations. The chromogen is shown to consist of two compounds with absorption maxima at 540-560 and 375-385 nm. The 2,6-dimethyl and 3,5-dimethyl analogues of p-aminophenol are found to undergo N- rather than C-substitution under similar conditions.

    Original languageEnglish
    Pages (from-to)9901-9910
    Number of pages10
    JournalJournal of Physical Chemistry A
    Volume115
    Issue number35
    DOIs
    Publication statusPublished - 8 Sep 2011

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