CuI-Catalyzed: One-Pot Synthesis of Diaryl Disulfides from Aryl Halides and Carbon Disulfide

Table 1

Optimization of the reaction temperature and screening of copper sources^a.

Entry	Copper salt	Temp. (°C)	Isolated yield (%)
1	CuCl	110	65
2	CuBr	110	72
3	Cu2O	110	52
4	CuI	110	95
5	CuI	100	88
6	CuI	80	83
7	CuI	60	77
8	CuI	25	15

aGeneral reaction conditions: carbon disulfide (6.0 mmol), KF/Al₂O₃ (1.0 g, 40% KF by weight), copper sources (0.32 mmol), and iodobenzene (2.0 mmol), in DMF (4 mL) for 5 h.