| 催化剂 | 催化剂用量 | 反应时间(h) | 产率 |
| 无催化剂 | 6.0 | 61.7% | |
| AlCl3 | 1.0 eq | 2.0 | 20.3% |
| 0.5 eq | 2.0 | 29.1% | |
| 0.2 eq | 2.0 | 36.7% | |
| 0.1 eq | 2.0 | 38.1% | |
| ZnCl2 | 1.0 eq | 2.0 | 18.9% |
| 0.5 eq | 2.0 | 30.9% | |
| 0.2 eq | 2.0 | 42.3% | |
| 0.1 eq | 2.0 | 45.9% | |
| FeCl3 | 1.0 eq | 2.0 | 28.6% |
| 0.5 eq | 2.0 | 39.5% | |
| 0.2 eq | 2.0 | 59.3% | |
| 0.1 eq | 2.0 | 65.7% | |
| FeCl2 | 0.2 eq | 2.0 | ----- |
| NiCl2 | 0.2 eq | 2.0 | ----- |