ChemInform Abstract: Tetraphenylphosphonium Bromide Catalyzed Fluorodenitrations and Fluorodesulfonylations. Efficient Syntheses of m‐Fluoro Aromatic Compounds.

Abstract

Activated nitro groups in aromatic systems are substituted with potassium fluoride in the presence of phthaloyl chloride and tetraphenylphosphonium bromide to give the corresponding fluorides, e.g. (II) or (IV).