Fig. 2: Substrate scope with phosphonic diamides.

Reaction conditions unless otherwise noted: a (0.10 mmol), Ph₂ISbF₆ (0.15 mmol), CuCl (0.01 mmol), L6 (0.015 mmol), NaOTf (0.0005 mmol), DTBP (0.15 mmol), DCM (2 mL) in a sealed tube at 60 °C for 48 h. DTBP 2,6-di-tert-butylpyridine.