Table 1 Optimization of catalytic amination conditions^a.


Entry	Variation of standard conditions	Yield (%)^b
1	None	92 (91^c)
2	L2 instead of L1	37
3	L3 instead of L1	66
4	L4 instead of L1	63
5	L5 instead of L1	27
6	FeCl₃ instead of FeI₂	7
7	Fe(acac)₃ instead of FeI₂	nd
8	PhSiH₃ instead of (EtO)₃SiH	79
9	Without 4CzIPN	59 (88^d)
10	Without FeI₂	nd
11	Without light irradiation	nd

nd not detected, blue LED blue light-emitting diode.
^aStandard conditions: 4CzIPN (1 mol%), FeI₂ (10 mol%), L1 (10 mol%), 1 (0.6 mmol), 2 (0.2 mmol), 2,6-lutidine (3.0 equiv.), (EtO)₃SiH (2.0 equiv.), MeCN (2 mL), blue LEDs, 65 °C, 24 h.
^bGC yield. ^cIsolated yield.
^dTime = 44 h. See Supplementary Information for additional optimization experiments.

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