Table 1.
| |||
---|---|---|---|
entrya | base | solvent | yield (%)b |
1 | CsOPiv (200 mol %) | MeOH (0.5 M) | 24 |
2 | CsOPiv (200 mol %) | EtOH (0.5 M) | 33 |
3 | CsOPiv (200 mol %) | TFE (0.5 M) | 59 |
4 | CsOPiv (200 mol %) | MeCN (0.5 M) | 78 |
5 | CsOAc (200 mol %) | MeCN (0.5 M) | 80 |
6 | CsOAc (20 mol %) | MeCN (0.1 M) | 81c |
7 | - | MeCN (0.1 M) | 0 |
8d | CsOAc (20 mol %) | MeCN (0.1 M) | 75c |
Standard Conditions: 1a (1 equiv), 2a (1 equiv), [RhCp*Cl2]2 (1 mol %).
Yield determined by HPLC.
Isolated Yield.
Catalyst loading (0.4 mol %)