Abstract: An efficient method for the synthesis of p-nitrofluorobenzene using highly effective anhydrous tetrabutylammonium fluoride (TBAFanh.) via the fluorodenitration processes is reported. TBAFanh. and p-dinitrobenzene were simply stirred together in an anhydrous solution of THF at room-temperature lead to yields of p-nitrofluorobenzene can reach more than 98%. The nucleophilic fluorinating method has the advantages of surprisingly mild reaction conditions, high yields, easy work-up and little side reaction.