Table 4.
Entry | Substrate | Product | Yield [%] | ee [%] |
---|---|---|---|---|
1 | 1 a (R=H) | 2 a (R=H) | 68 | 79 |
2 | 3 (R=Cl) | 4 (R=Cl) | 50 | 74 |
3 | 5 (R=OMe) | 6 (R=OMe) | 53 | 70 |
4 | 7 | 8 | 47 | 60 |
5 | 9 | 10 | 57 | 61 |
6 | 11 | 12 | 42 | 55 |
7[a] | 11 | 14 | 40 | 25 |
[a] Use of 1-methyl-1H-imidazole-2-thiol instead of sodium thiophenolate.