Selected resultsfor the Ru–NHC (1–3)b catalyzed one pot tandem β-alkylation reaction of various secondary alcoholsa.
| ||||||
|---|---|---|---|---|---|---|
| S. No. | 2° Alcohol | 1° Alcohol | Product | Ru–NHC (1b) | Ru–NHC (2b) | Ru–NHC (3b) |
| Yieldb | Yieldb | Yieldb | ||||
| 1 |
|
|
|
70 | 72 | 68 |
| 2 |
|
|
|
53 | 61 | 63 |
| 3 |
|
|
|
49 | 62 | 66 |
| 4 |
|
|
|
64 | 63 | 61 |
| 5 |
|
|
|
66 | 59 | 63 |
| 6 |
|
|
|
64 | 64 | 62 |
| 7 |
|
|
|
60 | 70 | 67 |
| 8 |
|
|
|
67 | 66 | 63 |
| 9 |
|
|
|
71 | 65 | 69 |
| 10 |
|
|
|
57 | 62 | 51 |
| 11 |
|
|
|
68 | 61 | 65 |
| 12 |
|
|
|
67 | 62 | 65 |
| 13 |
|
|
No product | — | — | — |
| 14 |
|
|
No product | — | — | — |
Reaction conditions: 1 : 1 : 1 ratio of 1°-alcohol : 2°-alcohol : base 1.00 mmol, 1 mol% of catalyst (1b)/(2b)/(3b), 2.0 mL of toluene at 110 °C for 3 hours.
Isolated yields (%).