Cobalt-Salen Catalyzed Electroreductive Alkylation of Activated Olefins

Table 4

Results of the reductive coupling reaction of 2-bromooctane with methylvinylketone with various anodes in an undivided cell.

Run	Anode	Yield (%)
1	Fe	51
2	Zn	33
3	Al	8
4	Mg	6
5	Cu	3

Experimental conditions: anode = metal rod; cathode = Ni grid (surface area = 30 cm²); current intensity I = 0.1 A; T = 60°C; solvent = DMF + TBABr (10⁻² mol·L⁻¹) + TBAI (8.10⁻³ mol·L⁻¹); catalyst = CoCl₂ (9.4.10⁻² mol·L⁻¹) + H₂Salen (9.4.10⁻² mol·L⁻¹); 2-bromooctane = 0.1875 mol·L⁻¹; methylvinylketone = 0.47 mol·L⁻¹; GC yield, with ethyl undecanoate as internal standard.