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| Entry | Promoter | ArI (1b) |
ArBr (1a) |
ArCl (1c) |
|||
| Conv. | Yield | Conv. | Yield | Conv. | Yield | ||
| 1 |
|
95% | 75% | 19% | 6% | 10% | <1% |
| 2 |
|
99% | 73% | 16% | 7% | 7% | <1% |
| 3 |
|
76% | 59% | 16% | 1% | 10% | <1% |
aReaction conditions: haloarene 1 (0.5 mmol), promoter 2 (20 mol%), t-BuOK (1.5 mmol), 4 mL benzene, Ar atmosphere, 80 °C for 12 h. Conversions and yields were determined by gas chromatography.
