Anodic oxidation of 2, 6-dimethylphenol in an alkaline dichloromethane in the presence of bromide ion gave poly[oxy(2, 6-dimethyl-1, 4-phenylene] with high efficiency. 4-Bromo-2, 6-dimethylphenol was isolated from the reaction mixture during the electrolysis. Bromide ion is assumed to serve as a mediator of electro-oxidative polymerization. The mechanism of this polymerization was discussed on the basis of results obtained in the measurements including cyclic voltammetry and double potential-step chronocoulometry.
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