反应详情

To a 100 ml flask containing 14.12 g of octanolactam (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 30 min at room temperature. Then the reaction was stirred for another 4 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 colorless, slightly viscous, moisture- and water-stable liquid of octanolactam trifluoroacetate was obtained with a yield of 98.2%, which has a glass transition temperature of −64° C., a density of 1.27 g/ml, a viscosity of 62 cP, an electrochemical window of 2.1 V, an ionic conductivity of 2.57×10−4 S/cm, and a Hammett acidic scale H0 of 4.79 using methyl yellow as indicator. No melting point was observed.

1. additionwas added
2. stirringThen the reaction was stirred for another 4 hours