Cobalt-Salen Catalyzed Electroreductive Alkylation of Activated Olefins

Table 5

Results of the conjugate addition of 2-bromooctane to methylvinylketone, catalyzed by Co^ISalen⁻, in DMF solution and with various electrolysis conditions.

Run	Catalyst	Electrolysis conditions	Yield (%)
1	CoSalen	Double separated	<10
		Compartment cell
		E = −1.2 V/SCE or −1.6 V/SCE
2	CoSalen	Undivided cell	<10
		Anode = Al, Mg, Cu
		Current density = 0.3 mA·dm^−2
3	CoSalen	Undivided cell	43
		Anode = Fe
		Current density = 0.3 mA·dm^−2
4	CoSalen + Fe^II	Undivided cell	25
		Anode = Al
		Current density = 0.3 mA·dm^−2
5	—	Undivided cell	<10
		Anode = Fe
		Current density = 0.3 mA·dm^−2

Yield is calculated by GC analysis with ethyl undecanoate as an internal standard.