Table 4.
| ||||||
---|---|---|---|---|---|---|
SM | R1 | R2 | R3 | R4 | pdt | yield (%)[a] |
9a | 4-Br | Ph | H | Bn | 10a | 99 |
9a | 4-Br | Ph | H | 3,5-diMeO-Bn | 10b | 72 |
9a | 4-Br | Ph | H | 4-F Bn | 10c | 85 |
9b | 4-Br | iBu | H | 4-F Bn | 10d | 97 |
9b | 4-Br | iBu | H | 2-Me Bn | 10e | 81 |
9c | 3-Cl | iBu | H | 4-Cl Bn | 10f | 76 |
9d | 5-Cl | Me | Ph | 2-Me Bn | 10g | 78 |
9d | 3-Cl | Me | Ph | 2-Me Bn | 10h | 83 |
Yields after filtration through a SiO2 SPE.