Boron trifluoride → 1-Benzoyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)

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Reaction Steps

A solution of 1-benzoyl-4-aza-1-azoniabicyclo[2.2.2]octane tetrafiuoroborate (32 g, 10 mmole) and boron trifluoride gas (6.7 g, 10 mmole) in acetonitrile (125 mL) was cooled to 8° C. and treated with a mixture of fluorine in nitrogen (10 % V/V, 12 mmole). The reaction was evaporated, the remaining solid washed with DME and dried to afford 1-benzoyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate).

Provenance & Evidence