T. Ohba et al., CARBON DIOXIDE-PROMOTED ELECTROCHEMICAL REDUCTION OF AROMATIC NITRO-COMPOUNDS TO AZOXY COMPOUNDS IN ACETONITRILE, Journal of the Chemical Society, Chemical Communications, (3), 1994, pp. 263-264
CO2 was found to promote electrochemical reduction of aromatic nitro c
ompounds in acetonitrile even in the absence of a proton source to pro
duce multi-electron reduction products, azoxy compounds as well as sma
ller amounts of azo and hydroxylamino compounds.