Table 1.
| |||||
---|---|---|---|---|---|
Entry | Subs. | R1 | R2 | Prod. | Yielda |
1 | 1a | octyl | Me | 2a | 75% (91) |
2 | 1b | octyl | Et | 2b | 86% (90) |
3 | 1c | octyl | i-Pr | 2c | 83% (93) |
4 | 1d | octyl | (CH2)2OH | 2d | 83% (86) |
5 | 1e | AcO(CH2)8 | Me | 2e | 85% (93) |
6 | 1f | BnO(CH2)3 | Me | 2f | 81% (94) |
7 | 1g | Ph(CH2)2 | Me | 2g | 80% (93) |
8 | 1h | octyl | (CH2)2Cl | 2h | 82% (92) |
Isolated yields on 0.5 mmol or (5 mmol) scale.