Table 1.
Entry | [Rh] | Solvent | Base | Yield (%) a | ee (%) b |
---|---|---|---|---|---|
1 | [Rh(coe)2Cl]2 | dioxane | KOH | 96 | 78 |
2 | [Rh(coe)2Cl]2 | DME | KOH | 99 | 81 |
3 | [Rh(coe)2Cl]2 | DME | K3PO4 | 59 | 73 |
4 | [Rh(coe)2Cl]2 | DME | K2CO3 | 94 | 87 |
5 | [Rh(coe)2Cl]2 | DME | NEt3 | trace | - |
6 | [Rh(nbd)2]BF4 | DME | K2CO3 | 57 | 87 |
7 | [Rh(nbd)2]BF4 | DME | NEt3 | 99 | 92 |
a Isolated yield; b Determined by HPLC.