Trifluoroacetic acid → HCID 69435429, compound

Participants

Reaction Steps

To a 100 ml flask containing 9.91 g of 4-methylpyrrolidone (0.1 mol), 30 ml benzene was added and stirred for dissolution. 11.40 g of trifluoroacetic acid (0.1 mol) was added dropwise into the flask over 40 min at room temperature. Then the reaction was stirred for another 6 hours. Desired product was formed after benzene was removed under reduced pressure and dried at 110° C. under 1–5 mmHg for 1 hour. The brown viscous, moisture- and water-stable liquid of 4-methylpyrrolidonium trifluoroacetate was obtained with a yield of 97.7%, which has a glass transition temperature of −85.0° C., a density of 1.33 g/ml, a viscosity of 22 cP, an electrochemical window of 2.4 V, an ionic conductivity of 5.63×10−4 S/cm, and a Hammett acidic scale H0 of 4.82 using methyl yellow as indicator. No melting point was observed.

Provenance & Evidence