The synthesis of [¹⁸F]fluoroarenes from the reaction of cyclotron-produced [¹⁸F]fluoride ion with diaryliodonium salts

Abstract

Diaryliodonium salts have been shown to react with fluoride ion at 80 °C in acetonitrile to generate aryl fluorides. The regioselectivity is controlled electronically and by the bulk of the ortho-substituents on the rings, with the latter the dominant factor such that electron-rich rings can be fluorinated. ortho-Substituted aryl fluorides can be selectively produced from unsymmetrical diaryliodonium salts. The process has been used to synthesise [¹⁸F] labelled aromatics by the use of cyclotron generated [¹⁸F]fluoride ion.

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