Entry | Solvent | Time/h | Acid binding agent | Temperature/°C | Yield/% |
---|---|---|---|---|---|
1 | Tetrahydrofuran | 8 | Potassium carbonate | 50 | 73.8 |
2 | Toluene | 8 | Potassium carbonate | 50 | 15.3 |
3 | Acetonitrile | 8 | Potassium carbonate | 50 | 22.1 |
4 | Dichloromethane | 8 | Potassium carbonate | 50 | 40.0 |
5 | Tetrahydrofuran | 8 | Triethylamine | 50 | 33.6 |
6 | Tetrahydrofuran | 8 | Pyridine | 50 | 55.4 |
7 | Tetrahydrofuran | 4 | Potassium carbonate | 50 | 62.5 |
8 | Tetrahydrofuran | 6 | Potassium carbonate | 50 | 67.8 |
9 | Tetrahydrofuran | 10 | Potassium carbonate | 50 | 76.4 |
10 | Tetrahydrofuran | 8 | Potassium carbonate | 25 | 60.1 |
11 | Tetrahydrofuran | 10 | Potassium carbonate | 25 | 62.2 |