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An efficient method of synthesizing the various 3-Fluorochromones from enamino ketones by using N-Fluoro benzenesulfonimide (NFSI) is described. The key step in the synthesis involves tandem cyclization and fluorination to form 3-fluorochromones in good yields. The significant features of this method include simple operational procedures, high purity of the product and cost reducing. This reaction achieved good to excellent yields (51–92%) under ambient conditions with significantly faster rate. The products obtained were confirmed by  1 H,  13 C NMR and mass spectroscopy techniques.

An efficient synthesis of 3-fluoro chromones from the tandem cyclization of enaminones by using N-Fluoro benzenesulfonimide