Table 15.
entry | R1 | R2 | ee (%) | time (h) | yield (%) | b:l |
---|---|---|---|---|---|---|
1 | 4-MeOC6H4 | Ph | 95 | 12 h | 70 | >99:1 |
2 | Ph | Ph | 95 | 16 h | 83 | 99:1 |
3 | 4-CF3C6H4 | Ph | 91 | 17 h | 71 | >99:1 |
4 | 2-Furyl | Ph | 94 | 3 h | 73 | 98:2 |
5 | Ph | 2-napthyl | 93 | 16 h | 71 | 98:2 |
6 | Ph | 4-MeOC6H4 | 95 | 4 h | 67 | 99:1 |
7 | Me | Ph | 90 | 21 h | 61 | 94:6 |
8 | n-C5H11 | Ph | 89 | 22 h | 52 | 80:20 |