Abstract
An electrochemical alternative to classical cyanomethylation is possible by using electrogenerated bases (EGBs), obtained by electroreduction of aryl halides in an undivided cell fitted with a cadmium coated cathode and a sacrificial magnesium anode. Acetonitrile is used both as solvent and as hydrogen-active compound. A coupling reaction with various electrophilic compounds was carried out. When the electrophilic compound was present from the beginning of the electrolysis, the expected coupling product with the cyanomethyl anion was obtained. If the electrophilic compound was added only after complete electrolysis of the aryl halide, dimerization of the cyanomethyl anion and a coupling reaction between the dimer anion and the electrophilic compound were observed.
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