To showcase the robustness and versatility of this process, we selected the conditions detailed in entry 4 and varied the carboxylic acid partner (Scheme 2). We began by examining a wide array of aromatic carboxylic acids. The reaction is insensitive to the electronic nature of the substituents or their position on the aromatic ring. Indeed, electron-rich (2,3), electron-neutral (4) and electron-poor derivatives (5,6), as well as acids with substituents on the ortho (7) and meta (8) positions, were swiftly converted into the corresponding acyl fluorides