Reference

Fluoroaromatics from arylamines

Fluoroaromatics from arylamines. A convenient one-pot conversion using nitrosonium tetrafluoroborate.Several substances are used for example 443-26-5 and 551-93-9 which are their cas registry numbers. Milner, David J. (Spec. Res. Cent., Imp. Chem. Ind. PLC, Blackley/Manchester, UK). Synth. Commun., 22(1), 73-82 (English) 1992. CODEN: SYNCAV. ISSN: 0039-7911. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 27 A simple, novel and extremely versatile procedure has been identified for the conversion of arylamines into the corresponding aryl fluorides. The amine is treated with nitrosonium tetrafluoroborate in dichloromethane and the resulting diazonium tetrafluoroborate is heated, without isolation or drying, to give the fluoroarom., generally in good yield. The method is applicable even to arylamines bearing carboxyl and hydroxyl substituents, which give poor yields of aryl fluorides under Balz-Schiemann conditions. .