Photoinduced C-C Cross-Coupling of Aryl Chlorides and Inert Arenes

Table 3

Radical/electron trapping experiments (see Scheme 3).

Entry	Trapping agent	Conversion (%)
1	None	28
2	PBN (2 equiv.)	3
3	PBN (4 equiv.)	2
4	TBA^+ (2 equiv.)	28

General reaction conditions: 4-chlorotoluene (0.1 mmol, 1 equiv.), benzene (11.24 mmol, 112.4 equiv.), room temperature (air cooling), N₂ atmosphere (balloon pressure), and UV light irradiation (254 nm, 10 mW·cm⁻², 4 h). TBA⁺ = tetra-n-butylammonium hexafluorophosphate.