Scheme 2. Scope of the flow electroreductive nickel-catalyzed cyclopropanation of alkenes. Reactions performed on 0.2 mmol scale. All yields are those of isolated products (see Supplementary Information for experimental details). Two reactors in series were used. I = 36 mA, J = 1.4 mA.cm -2 was applied. I = 48 mA, J = 1.8 mA.cm -2 was applied.