Table 2. Bismuth-Mediated Two-Step Method for the Fluorination of Arylboronic Acids with 47a.


Yields are given for step 1 (isolated) and step 2 (determined by 19F NMR using 1-fluoro-4-nitrobenzene as internal standard).
Step 2 performed in the presence of 5.0 equiv of NaF at 110 °C.
Isolated yield by preparative TLC. Products contain trace amounts (<5%) of protodeboronation byproducts.