Trifluoromethanesulfonic acid, lithium salt → HCID 10742526, compound

Participants

Reaction Steps

The reaction described in Example ID was repeated, using 1-ethyl-4-aza-1-azoniabicyclo[2,2,2]octane triflate (1.5 g, 5.2 mmol) in dry acetonitrile (200 cm3) in place of its N-methyl analogue and an equimolar proportion of lithium triflate (0.8 g). Work-up of the product, as in Example ID, afforded 1-ethyl-4-fluoro-1,4-diazoniabicyclo[2,2,2]octane ditriflate (1.9 g, 4.1 mmol, 80%), m.p. 236°-238° C. (dec.), δF (soln. in D2O; ext. TFA) 0.02 (s; CF3SO3-), 124.0 (br. m; FN+) p.p.m., δH (same soln.) 1.48 (t: CH3), 3.79 (q; CH2CH3), 4.40 (m: 3×ring CH2), 4.95 (m; 3 ring CH2) p.p.m. [residual H in D2O, 4.78 (s) p.p.m⟧

Provenance & Evidence