Coupling reaction of 2-bromophenol (heteroaryl) catalyzed by CuCl.

Entrya	1	2	Yieldb (%)
1			82
2			33
3			74
4			76
5			80
6			81
7			74
8			76
9			77
10			75
11			74
12			73
13			0
14			0
15			75

^aThe general conditions are as follows: 1 (2.0 mmol), CuCl (0.1 mmol), L15 (0.2 mmol), K₃PO₄ (3.0 mmol), 1,4-dioxane (3.0 mL).

^bIsolated yield.