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The AuCl3-catalyzed bromination of tetraphenylene (1).
 | ||||
| Entry | NBS (equiv) | T (°C) | t (h) | Yielda (%) |
| 1 | 1.0 | 80 | 12 | 64 |
| 2 | 1.0 | 50 | 12 | 54 |
| 3 | 1.0 | 100 | 12 | 64 |
| 4 | 1.5 | 80 | 12 | 86 |
| 5 | 1.5 | 80 | 24 | 98 (95)b |
aThe yields were determined by 1H NMR analysis of the crude products using CH2Br2 as the internal standard. bIsolated yields based on tetraphenylene (1).
