Optimisation and control experiments^ab.

Entry	Light	Additive (1.0 equiv.)	Temp. [°C]	Yield [%]
1	15 W blue LEDs (448 nm)	—	R.T.	55 (54)c
2	Dark	—	R.T.	N. D.
3	Dark	—	65	N. D.
4	15 W green LEDs (530 nm)	—	R.T.	6
5	15 W blue LEDs (448 nm)	Run with 2 equiv. of CF3(CF2)3I	R.T.	50
6	15 W blue LEDs (448 nm)	Oxone	R.T.	89c
7d	15 W blue LEDs (448 nm)	Oxone	R.T.	77c
8	15 W blue LEDs (448 nm)	K2S2O8	R.T.	58
9	15 W blue LEDs (448 nm)	(NH4)2S2O8	R.T.	50
10	15 W blue LEDs (448 nm)	PhI(OAc)2	R.T.	N. D.
11	15 W blue LEDs (448 nm)	[FeCp2]PF6	R.T.	86c
12	15 W blue LEDs (448 nm)	AgOAc	R.T.	33

^aGeneral conditions: palladacycle 1 (1.0 equiv.), CF₃(CF₂)₃I (2) (1 equiv.), solvent (0.1 M in substrate), 16 h.

^bYield determined by ¹H NMR spectroscopy using 2,5-dimethylfuran as an internal standard.

^cIsolated yield.

^dUnder air.