A similar reaction to this uses a tetrafluoroborat
A similar reaction to this uses a tetrafluoroborate salt to substitute fluorine onto an aryl amine; this is known as the Schiemann reaction.  Other variations of this reaction include the use of cuprous cyanide to form benzonitriles, a thiol to create thioethers, or water to generate phenols.  Often requiring heat to be driven to completion, it involves treating with nitrous acid to produce a diazonium ion, and allows the replacement of amine groups of an aromatic amine with substituents of choice.   FTP, name this reaction which is most commonly used to synthesize aryl halides from aryl amines by proceeding through a diazonium salt.
A similar reaction to this uses a tetrafluoroborate salt to substitute fluorine onto an aryl amine; this is known as the Schiemann reaction.  
Sandmeyer reaction