Table 1.
| |||
---|---|---|---|
Entry | Solvent | Base | Yield [%][a] |
1 | CF3Ph | Cs2CO3 | 85 |
2 | CH3Ph | Cs2CO3 | 87 |
3 | xylenes | Cs2CO3 | 90 |
4 | CH3Ph | proton sponge | 57 |
5 | CH3Ph | NBu4OAc | 96 |
6 | CH3Ph | 2,5-di-tBu-4-Me-pyridine | 83 |
7 | CH3Ph | – | 70 |
Yield refers to amount of 2 isolated after flash chromatography.