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

Table 1

Direct cross-coupling of benzene with 4-chlorotoluene under UV light irradiation (see Scheme 3 and Figure 2).

Entry	Irradiation time [h]	Conversion [%]
1	4	28
2	8	40
3	12	52
4	16	60
5	20	67
6	24	75
7	24	45
8	24	0

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). Air atmosphere. Conditions changed from irradiating to heating to 100°C.