Table 1.
The effect of solvent on the yield of compound 7b.
| Entry | Solvent | Time (h) | t (°C) | Yield (%) |
|---|---|---|---|---|
| 1 | Acetonitrile | 5 | 25 | 32.8 |
| 2 | Dichloromethane | 5 | 25 | 17.5 |
| 3 | Acetone | 5 | 25 | trace |
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