Reaction optimization^a.

Entry	Solvent	Amine/HF	Catalyst loading [mol%]	Yieldb [%]
1	CHCl3	1 : 4.5	20	72
2	CHCl 3	1 : 6.0	20	>95
3	CHCl3	1 : 7.5	20	94
4	CHCl3	1 : 9.23	20	87
5	CHCl3	1 : 6.0	10	87
6	CHCl3	1 : 6.0	5	79
7	DCM	1 : 6.0	20	>95
8	DCE	1 : 6.0	20	93
9	ETFA	1 : 6.0	20	84
10	MeCN	1 : 6.0	20	50
11	CHCl3	1 : 6.0	0	<5

^aStandard reaction conditions: 1a (0.2 mmol), Selectfluor® (1.5 equiv.), amine : HF source (0.5 mL), solvent (0.5 mL), p-TolI, 24 h, rt.

^bDetermined by ¹⁹F NMR using α,α,α-trifluorotoluene as internal standard.