Scheme 1.
Synthetic route for compounds 1a–h, 5a–h, 6a and 7a.
| 3,4 | a | b | c | d | e | f |
|---|---|---|---|---|---|---|
| R | H | 3-4,Cl2 | 3-Cl | 4-NO2 | 3,4,5-OCH3 | 4-CH3 |
| 1,5,6,7 | a | b | c | d | e | f | g | h |
|---|---|---|---|---|---|---|---|---|
| R | H | 3-4,Cl2 | 3-Cl | 4-NO2 | 3,4,5-OCH3 | 4-CH3 | H | 3-4,Cl2 |
| R1 | CH3 | CH3 | CH3 | CH3 | CH3 | CH3 | C6H5 | C6H5 |
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