Scope of substrates^a.

Entry	1	R1	R2	R3	3	[M]X	Yield of 3 b (%)
1c	1b	MeO	H	H	3b	Cu(NTf2)2	44
2	1c	Me	H	H	3c	Cu(NTf2)2	47
3	1d	Br	H	H	3d	Cu(NTf2)2	77
4	1e	CF3	H	H	3e	AgNTf2	72
5	1f	H	MeO	H	3f	AgNTf2	39
6	1g	H	Me	H	3g	Cu(NTf2)2	58
7	1h	H	Br	H	3h	AgNTf2	59
8	1i	H	CF3	H	3i	Cu(NTf2)2	63
9	1j	H	H	Me	3j	AgNTf2	74

^aUnless otherwise specified, all reactions were carried out using 0.1 mmol of 1, 1.0 mmol (10 equiv.) of 2a, 10 μmol (10 mol%) of AgNTf₂ or Cu(NTf₂)₂, 20 μmol (20 mol%) of P(4-CF₃C₆H₄)₃, and 5 equiv. of TFA in 1,2-dichloroethane (1 mL: 0.1 M of 1) at 50 °C for 1 h.

^bIsolated yield.

^cAt 0 °C for 6 h.