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| 编号 | 催化剂(10 mol%) | 添加剂(20 mol%) | 溶剂(1 mL) | 产率b |
| 1 | CuCl2 | 吡啶 | 甲苯 | 73 |
| 2 | CuCl2 | 1,10-邻菲罗啉 | 甲苯 | 70 |
| 3 | CuCl2 | 2,2-联吡啶 | 甲苯 | 68 |
| 4 | CuCl2 | --- | 甲苯 | 81 |
| 5 | Cu(OAc)2 | --- | 甲苯 | 77 |
| 6 | Cu(NO3)2 | --- | 甲苯 | 90 |
| 7 | CuBr2 | --- | 甲苯 | 85 |
| 8 | CuBr | --- | 甲苯 | 80 |
| 9 | CuI | --- | 甲苯 | 84 |
| 10 | Cu(NO3)2 | --- | DMF | 24 |
| 11 | Cu(NO3)2 | --- | 1,4-二氧六环 | 66 |
| 12 | Cu(NO3)2 | --- | CH3CN | 35 |