Electrohydrodimerization Reactions

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Abstract
The reduction of the activated olefins dimethyl fumarate, cinnamonitrile, and fumaronitrile in tetra‐n‐butylammonium iodide‐dimethylformamide solutions at a platinum electrode has been studied by rotating ring‐disk electrode (RRDE) voltammetry, cyclic voltammetry, and coulometry. The results indicate that each compound undergoes a one‐electron reduction to the anion radical which then undergoes a dimerization reaction. Rate constants for this dimerization reaction were found to be 110 (dimethyl fumarate), 880 (cinnamonitrile), and . Evidence of some bulk polymerization reaction was obtained from the coulometric results.

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