| n | R | % Yield | |
|---|---|---|---|
| 66a | 1 | -N(CH3)2 | 16 |
| 66b | 1 | -OMe | 25 |
| 66c | 1 | -H | 16 |
| 66d | 1 | -CN | 20 |
| 66e | 1 | -NO2 | 24 |
| 66f | 2 | -N(CH3)2 | 16 |
| 66g | 2 | -OMe | 13 |
| 66h | 2 | -H | 14 |
| 66i | 2 | -CN | 25 |
| 66j | 2 | -NO2 | 20 |
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