Table 1.

Optimization of reaction conditions.^[a]

Entry	Variation from conditions	Yield [%][b]
1	None	68 (65)
2	TBADT (1 mol %)	50
3	Ni I (5 mol %)	53
4	Ni II	39
5[c]	Ni III	28
6	36 W	52
7	DBU or Pyridine	–
8	2.5 equiv of cyclohexane	41
9	10 equiv of cyclohexane	70
10[d]	Batch conditions	50
11	Absence of TBADT, Ni or Light	–
12	Scale up, 5 mmol	55

[a] Cyclohexane (5 equiv), 4‐methoxy benzoyl chloride (0.5 mmol), in CH₃CN (5 mL). [b] Yields determined by ¹H NMR spectroscopy using trichloroethylene as external standard, yield of the isolated product is reported in brackets. [c] The reaction mixture is heterogeneous, therefore it was conducted under batch conditions, please see the Supporting Information for further information. [d] The reaction mixture was irradiated for 12 hours, please see the Supporting Information for further information.