Scheme 35.
Regioselective C-6 amination of 101.
| R', R'' | %Yield 102 | %Yield 103 | |
|---|---|---|---|
| a |  |
68 | 12 |
| b |  |
79 | 9 |
| c |  |
68 | 7 |
| d |  |
45 | - |
| e |  |
41 | - |
| f |  |
43 | - |
| g |  |
39 | - |
Reagents and conditions: (i) R'R''NH, 140 °C, 3 days.
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