Table 1.
Entry | Potential/V vs Fc/Fc+ | TBAI | Yield/% |
---|---|---|---|
1 | 0.3 | 10 mol% | 4% |
2 | 0.4 | 10 mol% | 70% |
3 | 0.5 | 10 mol% | 75% (72%) |
4 | 0.5 | - | n.d. |
5[b] | 0.5 | 10 mol% | 19% |
The reaction was performed on a 0.5 mmol scale under constant potential (CP) conditions, yields were determined by 1H NMR with m-xylene as an internal standard; isolated yield shown in parenthesis.
Without irradiation.
TFE = 2,2,2-Trifluoroethanol. n.d. = not detected.