Fig. 3. Scope of defluorinative coupling of ArCF₃ with [1.1.1]propellane^a.

^aIsolated yields. General reaction conditions: trifluoroarenes (0.6 mmol, 1.0 equiv.), [1.1.1]propellane (1.5 equiv.), γ-terpinene (5.0 equiv.), photocatalyst (10 mol%), base (1.2 equiv.), DMSO (0.025 M), Kessil LEDs 427 nm (40 W) for 12 h. Selection of photocatalyst & base see Supplementary Information. ^bPCN (1) as photocatalyst and Cs₂CO₃ as base. ^cPBN (3) as photocatalyst and CsOH·H₂O as base. ^dPerformed with trifluoroarenes hydrochloride (0.6 mmol, 1.0 equiv.), base (2.2 equiv.). ^e[1.1.1]propellane (2.0 equiv.).