Table 1.
Compd | R | R1 | R2 | Yield% | Compd | R | R1 | R2 | Yield% |
---|---|---|---|---|---|---|---|---|---|
1a | H | H | H | 63 | 2f | OMe | Me | Me | 79 |
1b | H | H | Br | 60 | 2g | Br | Me | Me | 98 |
1c | H | H | F | 75 | 2h | F | Me | Me | 95 |
1d | Me | H | H | 90 | 2i | F | H | Me | 82 |
1e | Me | H | Br | 94 | 2j | F | H | H | 66 |
1f | Me | H | F | 90 | 3a | H | Boc | H | 84 |
1g | Me | Me | H | 60 | 3b | OMe | Boc | H | 77 |
1h | Me | Me | Br | 90 | 3c | Br | Boc | H | 77 |
1i | Me | Me | F | 60 | 3d | H | Boc | Me | 91 |
1j | H | Me | H | 85 | 3e | OMe | Boc | Me | 92 |
1k | H | Me | Br | 80 | 3f | Br | Boc | Me | 91 |
1l | H | Me | F | 72 | 4a | H | H | H | 93 |
2a | H | Me | H | 98 | 4b | OMe | H | H | 62 |
2b | OMe | Me | H | 65 | 4c | Br | H | H | 98 |
2c | Br | Me | H | 93 | 4d | H | H | Me | 75 |
2d | F | Me | H | 97 | 4e | OMe | H | Me | 73 |
2e | H | Me | Me | 96 | 4f | Br | H | Me | 99 |