Selective C–F functionalization of polyfluoroarenes remains a considerable challenge, particularly for controlled and sequential substitution. Now it has been shown that reactivity-tunable pyridine-boryl radicals enable sequential and versatile C–F transformations through a link-and-lose pathway, allowing hydro- and deuterodefluorination, defluorinative arylation and alkylation with spectroscopic observation of key radical intermediates.
- Tian Ye
- Fang-Song Zhang
- Yi-Feng Wang