Summary of the influence of key reaction parametersa.
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|---|---|---|---|---|---|
| Entry | Ligand | Anode | Cathode | Solvent | Yield (%) |
| 1 | L1 | FTO | Carbon fibre | THF/CH3CN = 4 : 1 | 56 |
| 2 | L1 | FTO | Carbon fibre | THF/CH3CN = 4 : 1 | 76b |
| 3 | L2 | FTO | Carbon fibre | THF/CH3CN = 4 : 1 | 43 |
| 4 | L3 | FTO | Carbon fibre | THF/CH3CN = 4 : 1 | 46 |
| 5 | L4 | FTO | Carbon fibre | THF/CH3CN = 4 : 1 | 21 |
| 6 | L1 | FTO | Carbon fibre | CH3CN | 4 |
| 7 | L1 | FTO | Carbon fibre | DMA | 15 |
| 8 | L1 | FTO | Carbon fibre | DMF | 6 |
| 9 | L1 | FTO | Ni foam | THF/CH3CN = 4 : 1 | 45 |
| 10 | L1 | FTO | Pt foil | THF/CH3CN = 4 : 1 | 28 |
| 11 | L1 | Carbon fibre (1 cm2) | Carbon fibre | THF/CH3CN = 4 : 1 | 0 |
| 12 | L1 | Pt foil (cm2) | Carbon fibre | THF/CH3CN = 4 : 1 | 7 |
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Reaction conditions: 1a (0.6 mmol), 2a (0.2 mmol), (DME)NiBr2 (6 mol%), ligand (7.2 mol mol%), LutHClO4 (0.1 M), and lutidine (0.8 mmol) in solvent (2 mL) at 40 °C. GC yield.
Reaction time: 36 h. Isolated yield.