Scope of donor molecules 2 ^a.

Entry	2	Ar2	R4	R5	3	Yield of 3 b (%)
1c	2b	4-CF3C6H4	H	H	3n	18 (21)c
2	2c	4-BrC6H4	H	H	3o	54 (50)c
3	2d	Ph	Me	H	3p	62
4	2e	Ph	Me	Me	3q	NRd

^aUnless otherwise specified, all reactions were carried out using 0.1 mmol of 1, 1.0 mmol (10 equiv.) of 2, 10 μmol (10 mol%) of AgNTf₂, 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.

^cThe reaction was conducted for 2 h.

^dNR: no reaction.