Fe(TF4DMAP)Cl-catalysed intramolecular C–H amination of N-containing alkyl azides under photocatalytic conditionsa.
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Entry | Substrate | Product | Yield (%) |
1 |
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75 |
2 |
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70 |
3 |
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78 |
4 |
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61; 30b |
5 |
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45 |
6 |
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98 |
7 |
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95 |
8 |
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55 |
Reactions were run under argon with 0.3 mmol of the azide, Boc2O (0.36 mmol), 3 × 10−3 mmol of the catalyst (1 mol% with respect to the azide) and 120 mg 4 Å MS in 2.0 mL of anhydrous DCE in a 10.0 mL sealed tube. The tube was irradiated with a blue LED at 25–35 °C. Isolated yields are shown.
[Fe(F20TPP)Cl] was used as the catalyst. Yields were determined by 1H NMR spectroscopy.