Table 4. Catalytic isomerization of (1R)-(−)-myrtenol into myrtanal catalyzed by 1 and 2.
| |||||||
|---|---|---|---|---|---|---|---|
| Catalyst | [Ru] mol% | T (°C) | Time (h) | Solvent | TON | TOFa (h−1) | Conversion (%) |
| 1 | 10 | 70 | 8 | MeOH/H2O | 3 | 0.4 | 30 |
| 1 | 10 | 80 | 8 | i PrOH/H2O | 3.5 | 0.4 | 35 |
| 1 | 10 | 80 | 48 | i PrOH/H2O | 7.0 | 0.2 | 70 |
| 2 | 10 | 80 | 24 | i PrOH/H2O | 2.5 | 0.1 | 25 |
| 2 | 10 | 80 | 48 | i PrOH/H2O | 4.3 | 0.1 | 43 |
TON = turn over number, TOF = turn over frequency, N2, ROH/H2O 1 : 1 = 1 mL, % measured by 1H NMR.