Table 1.

Electrochemical reduction of nitroarenes to symmetrical and asymmetrical azoxy-aromatics over a CoP cathode.

^aNitro substrates (0.5 mmol), CoP (working area: 1 cm²), 1.0 M KOH (25 mL), room temperature, −0.75 V vs. Ag/AgCl. Con. is the abbreviation for conversion and sel. for selectivity. The con. and sel. are determined by gas chromatography. ^b−0.7 V vs. Ag/AgCl was used. ^c−0.8 V vs. Ag/AgCl was used. ^dp-methoxynitrobenzene (0.5 mmol), other nitro substrates (1.5 mmol). ^ep-ethoxynitrobenzene (0.5 mmol), 1a (1.5 mmol), −0.8 V vs. Ag/AgCl.