Electrochemical Oxidation of 2,4,6-Tribromophenol in Aqueous-Alcoholic Media

Electrooxidation of 2,4,6-tribromophenol on platinum gauze electrode in 90% (v/v) alcohol (methanol, ethanol, propan-1-ol, butan-1-ol) was studied. Products were investigated by gas chromatography/mass spectrometry. Structures of several different types of monomeric as well as dimeric alkoxy derivatives have been suggested according to mass spectra of the detected products. Series of 2,6-dibromo-4-alkoxyphenols, 2,4,6-tribromo-6-alkoxycyclohexa-2,4-dien-1-ones and 2,6-dibromo-6-alkoxycyclohex-2-ene-1,4-diones were found. By analogy to identified monomeric alkoxy derivatives, a serie of dimeric 2,6-dibromo-4-(2,6-dibromo-4-alkoxyphenoxy)phenols was suggested and identified in respective chromatograms as well.