Dyes from Enzyme-Mediated Oxidation of Aromatic Amines

摘要

This paper characterizes reaction products from the oxidoreductase enzymatic conversion of aromatic amines to dyes that have an affinity for wool fibers. The dyes are identified with the aid of mass spectrometry, FTIR, H-NMR, combustion analysis, and by comparison of experimental and calculated λ_(max) data. The results of these analyses indicate that the dyes are binuclear and trinuclear aromatic compounds, depending on the number of available coupling sites in the precursor molecules and the number of reactants employed in the coupling step. Pathways associated with this enzyme-induced formation of dyes are proposed that involve a two-electron oxidation of 1,4-diamines to electrophilic diimines.