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| Entry | Cat. | T (°C)/t (min) | Q (mol:mol) | Conv. (1a, %) | Sel. 4a (%) |
|---|---|---|---|---|---|
| 1 | - | 100/60 | 3 | 91 | - |
| 2 | Pd/C | 100/60 | 3 | 97 | 83 |
| 3 | 50/60 | 3 | 42 | - | |
| 4 | 100/60 | 3 | 92 | 76 | |
| 5 | 100/60 | 1 | 94 | 75 | |
| 6 | 100/60 | 2 | 99 | 81 |
Q = vanillin:ammonium formate molar ratio. Other conditions: vanillin (5 mmol), morpholine (5 mmol), rotation speed: 50 rpm; Pd/C (100 mg).
