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| Reaction number | Amount of catalyst (mg) | Time (min) | Yield (%) |
|---|---|---|---|
| 1 | 0 | 45 | 5 |
| 2 | 1 | 11 | 60 |
| 3 | 2 | 3 | 97 |
| 4 | 3 | 3 | 97 |
Reaction conditions: 2 mmol of dimedone, 1 mmol of benzaldehyde, 1 mmol of ammonium nitrate, 110 °C.
