1. The yield of 2,3-di-(2′-thienyl)-2,3-butanediol which is formed upon electroreduction of 2-acetylthiophene in DMF solution depends on the composition of the background electrolyte; the yield is at its maximum when the electrolysis is carried out in the presence of lithium salt. 2. Products resulting from subsequent reactions of non-pinacol-type dimeric dianions upon electrolysis of 2-acetylthiophene under an Ar atmosphere or CO2 were also isolated and characterized.