Table 1.
entry | chiral amide | sign for α | ee for 24 | yield of 24 three steps |
---|---|---|---|---|
1 | 0 | 15–36% | ||
2 | + | 59% | 5–18% | |
3 | + | 24% | 10–25% | |
4 | − | 7% | 0–5% |
entry | chiral amide | sign for α | ee for 24 | yield of 24 three steps |
---|---|---|---|---|
1 | 0 | 15–36% | ||
2 | + | 59% | 5–18% | |
3 | + | 24% | 10–25% | |
4 | − | 7% | 0–5% |