Internal borylation occurs upon activation of aryl di-isopropylphosphinite boranes with HNTf<sub>2</sub> to give heterocyclic intermediates that can be reductively quenched to afford <b>6</b> or treated with KHF<sub>2</sub> to give the phenolic potassium aryl trifluoroborate salts <b>10</b>. The latter salts are useful for Pd-catalyzed coupling with aryl iodides under Molander conditions, provided that precautions are taken to remove the KNTf<sub>2</sub> byproduct from the preceding KHF<sub>2</sub> step
