Methyl Salicylate → Methyl 2-(2,2,2-trifluoroethoxy)benzoate

Reaktionsgleichung

[C:1]([O:10][CH3:11])(=[O:9])[C:2]1[C:3](=[CH:5][CH:6]=[CH:7][CH:8]=1)[OH:4].FC(F)(F)S(O[CH2:18][C:19]([F:22])([F:21])[F:20])(=O)=O.C(=O)([O-])[O-].[K+].[K+]>CC(C)=O>[F:20][C:19]([F:22])([F:21])[CH2:18][O:4][C:3]1[CH:5]=[CH:6][CH:7]=[CH:8][C:2]=1[C:1]([O:10][CH3:11])=[O:9]

Komponenten

Versuchsvorschrift

A mixture of methyl salicylate (6.4 ml., 7.6 g., 0.05 mole), 2,2,2-trifluoroethyl trifluoromethanesulfonate (13.9 g., 0.06 mole), anhydrous potassium carbonate (13.8 g., 0.1 mole) and acetone (150 ml.) is heated under reflux with efficient stirring for three days. The product is filtered and the filtrate is concentrated to a small volume. It is diluted with cold water and the resulting precipitate is collected and washed successively with cold dilute sodium hydroxide solution and water. The desired material is recrystallized then from aqueous ethanol to afford white solid, m.p. 61-62.