Optimization of pertinent reaction parameters.
Entry | Solvent | Temp (°C) | Conc (M) | Time | Yielda (%) |
---|---|---|---|---|---|
1b | DME | rt | 0.05 | 15 h | 75 |
2 | DME | 40 | 0.05 | 18 h | 79 |
3 | DME | 80 | 0.05 | 20 min | 81 |
4 | DME | 80 | 0.1 | 20 min | 73 |
5 | THE | 80 | 0.05 | 20 min | 38 |
6c | DME | 80 | 0.05 | 20 min | 0 |
Determined by 1H-NMR with 1,3,5-trimethoxybenzene as an internal standard.
Reaction ran inside of glovebox.
Reaction ran without Fe(OTf)2.