Substrate scope for fluorine transfer.

^aIsolated yields. All reactions were run on 0.3 mmol scale unless otherwise noted.

^bYield reported as an average of two trials.

^c35 min reaction time.

^ddr = 1 : 3.2 when ran at room temperature for 24 h.

^e0.25 mmol scale.

^f0.18 mmol scale.

^g0.1 mmol scale, yield determined by ¹⁹F-NMR with 4-fluorotoluene as an internal standard.