Fluorinated asym. aryl ketones represent a pivotal class of organic synthesis intermediates, which have garnered widespread application in the realms of organic chem., materials science, and drug discovery.Herein, we report a pioneering nucleophilic aromatic substitution (SNAr) reaction involving aryl aldehydes and polyfluoroarenes, elegantly catalyzed by N-heterocyclic carbene (NHC).This innovative strategy yields bis(hetero)aryl ketone products in yields ranging from moderate to exceptional (40-83%), all achieved under gentle conditions, devoid of both transition metals and directing groups.The versatility of this method is underscored by its compatibility with a broad spectrum of substrates, particularly exhibiting remarkable resilience toward alkoxy functional groups.Notably, we have successfully transformed an array of biol. active mols., crafting a series of their corresponding derivatives with precision.