Table 4 .
entry | Ar | product | yield, % |
---|---|---|---|
1 | 4-CNC6H4 | 55 | |
2 | 4-CF3C6H4 | 74 | |
3 | 4-NO2C6H4 | 59 | |
4 | 3,4-(OMe)2C6H4 | 57 | |
5 | 3-MeOC6H4 | 54 | |
6 | 3-MeC6H4 | 60 | |
7 | 4-C5H4N | 51 | |
8b | 4-C5H4N | 47 |
Scale: 0.5 mmol; time: 2–8 h; 1/1 amide/alcohol ratio, 90–110 °C, 11% catalyst = 22 mol % Cu. Please see Supporting Information for details.
Amide/alcohol ratio: 1/3, DMPU solvent.