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Amination of several carboxylic acids by reductive fixation of molecular nitrogen was achieved by glow discharge against aqueous solution of these carboxylic acids. The yield of the aminated product is the highest in the case of maleic acid among carboxylic acids used. The addition of hydrochloric acid to the reaction mixture enhances the yields of aminated products. This may be caused by the fact that chloride anion is oxidized by hydroxyl radicals to chlorate ion, and the fixation of molecular nitrogen proceeds under relatively reducing conditions.

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