Table 1.
Compound | R1 | R2 | R3 | R4 | R5 | Yield |
---|---|---|---|---|---|---|
5a | H | H | H | H | H | 23% |
5b | H | Cl | H | CH3 | H | 31% |
5c | H | Br | H | H | H | 14% |
5d | OCH3 | H | H | CH3 | H | 5% |
5e | H | Cl | H | OCH3 | H | 17% |
5f | H | Br | H | CH3 | H | 34% |
5g | H | H | H | H | OCH3 | 30% |
5h | H | H | OCH3 | H | H | 13% |
5i | H | H | H | OCH3 | H | 10% |
5j | H | H | H | CH3 | H | 27% |
5k | H | Cl | H | H | H | 11% |
5l | OCH3 | H | H | H | H | 22% |
5m | H | OCH3 | H | OCH3 | OH | 12% |
5n | Br | H | H | H | H | 14% |