Entry | Catalytic System [a] | T | time | Yield [b] |
1 | [Rh(COD)2]+ /BINAP5 mol%/6 mol% | 80˚C | 6 h | 0% [c] |
2 | Cp*RuCl(COD) 10 mol% | 80˚C | 6 h | 0% |
3 | [RhCl(C8H14)2]2/3BINAP3.5 mol%/10 mol% | 40˚C | 3 h | 84% |
4 | [RhCl(C8H14)2]2/3BINAP3.5 mol%/10 mol% | 25˚C | 15 h | 56% |
5 | [RhCl(C8H14)2]2/3BINAP3.5 mol%/10 mol% | 80˚C | 3 h | 95% |
6 | [RhCl(C8H14)2]2/3BINAP2 mol%/6 mol% | 80˚C | 6 h | 67% |
7 | [RhCl(C8H14)2]2/Xantphos3.5 mol%/10 mol% | 80˚C | 6 h | 0% |
8 | [RhCl(C8H14)2]2/dppf3.5 mol%/10 mol% | 80˚C | 6 h | 0% |