The electrochemically-induced addition of nitroalkenes to mono and dialdehydes as well as mono and diolefins was investigated. The reactivity was highly dependent on the solvent. Selectivity of addition has been made possible by controlling the charge injected upon electrolysis of a pure nitromethane solution in the presence of 1,3- or 1,4-benzenedicarboxaldehyde to direct the reaction toward the mono- or bis-(nitroalcohol). Dehydration of the latter resulted in almost quantitative yields of 1,4-bis(2-nitroethenyl)benzene. This diolefin was further submitted to attack of various electrochemically generated nucleophiles. Whether polymerization, double Michael addition or no reaction occurred, depended greatly on the pK(a) and on the structure of the starting anion.