The reactions of 1,4 dimethoxybenzene with azoles (pyrazole, triazole, and their deriva tives, as well as tetrazole) were studied by undivided amperostatic electrolysis at Pt electrodes in MeOH. The process proceeds via the formation of a 1,1,4 trimethoxyarenonium cation as the key intermediate and affords 1,1,4,4 tetramethoxycyclohexa 2,5 diene, 1,1,4 trimethoxy 4 (azol 1 yl)cyclohexa 2,5 diene, and 1,4 dimethoxy 2 (azol 1 yl)benzene as the main prod ucts. Azole and solvent molecules compete as nucleophiles during electrolysis. A fine mecha nism of the process was considered.

The influence of different solvent systems on the title reaction is studied and the reaction mechanism is discussed. -(PETROSYAN*, V. A.; VAKHOTINA, T. S.; BURASOV, A. V.; Russ.

Using the obtaining of 1,4-dimethoxy-2-(3-nitro-1,2,4-triazole-1-yl)benzene (I) and 1,4-dimethoxy-2-(tetrazolyl-1+-2)benzene (II) as an example, a method for indirect electrosynthesis of these substances is developed. In the first stage of this process, electrosynthesis of 1,1,4,4-tetramethoxycyclohexane-2,5-diene is realized by means of oxidation of 1,4-dimethoxybenezene on a platinum anode in an environment of MeOH in a diaphragmless cell. In the second, chemical interaction of this diene with 3-nitro-1,2,4-triazole and tetrazole is performed when heating a mixture of these substances for a long time at 110°ë in the presence of additives of collidine. As a result, target products I and II were obtained with a good (60-90%) yield. Realization of this process opens new possibilities for producing N-arylazoles.

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