1-Chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate), 98+%

General References:

1. SELECTFLUOR is a registered trademark of Air Products & Chemicals Inc.
2. Water- and organic-soluble reagent developed by R. E. Banks and co-workers for electrophilic fluorination of a variety of substrates under mild conditions: USP 5,086,178 (1992 to Air Products & Chemicals, Inc.); review: J. Fluorine Chem., 87, 1 (1998). In acetonitrile, activated aromatics can be fluorinated in good yield: J. Chem. Soc., Perkin 1., 2069 (1996). Less active substrates can be fluorinated in the presence of triflic acid: Israel J. Chem., 39, 207 (1999). In acetonitrile, vinylsilanes undergo fluorodesilylation to give vinyl fluorides with retention of configuration: Chem. Commun., 233 (2001).
3. Stabilized carbanions can be selectively mono- or difluorinated: J. Chem. Soc., Chem. Commun., 343 (1994); Tetrahedron, 51, 3587 (1995). Fluorinated steroids have been prepared from enol acetates or silyl enol ethers: J. Org. Chem., 58, 2791 (1993). 5-Fluoropyrimidine nucleosides can be obtained by treatment of protected nucleosides with the reagent in the presence of water or methanol, followed by elimination of the resulting fluorohydrin derivative: J. Org. Chem., 60, 7340 (1995).
4. For use in the synthesis of fluorinated carbohydrates by reaction with glycals, see: J. Am. Chem. Soc., 119, 11743 (1997); J. Org. Chem., 64, 5264 (1999).
5. For application to N-fluorination of amines, see: Chem. Commun., 1196 (2001). Review of mechanistic insight and applications of the reagent: Angew. Chem. Int Ed., 44, 192 (2005). Brief feature on uses in synthesis: Synlett, 807 (2006). Review of electrophilic N-F fluorinating agents: Chem. Rev., 96, 1737 (1996).