Table 1.

Optimization of catalytic amination conditions^a.

Entry	Variation of standard conditions	Yield (%)b
1	None	92 (91c)
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 (88d)
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.