反应详情

4-Hydroxybenzoic acid (2.045 mmol, 0.282 g), 1,1,1,3,3,3-hexafluoro-2-(4-(piperazin-1-ylmethyl)phenyl)propan-2-ol (2.045 mmol, 0.7 g) and triethylamine (6.14 mmol, 0.853 mL, 0.621 g) were combined and stirred at room temperature in dichloromethane (5 mL). 1-Propanephosphonic acid cyclic anhydride (3.07 mmol, 1.826 mL, 1.952 g; 50% solution in ethyl acetate) was added and the reaction stirred for 2 hours. The reaction mixture was washed with saturated sodium bicarbonate solution and the organic layer dried over magnesium sulphate and concentrated under vacuum. The residue was dissolved in dichloromethane with a few drops of methanol and purified by column chromatography (dichloromethane—6% methanol in dichloromethane) to afford the title compound (90 mg). MS (ESI) m/z 463.0 [M+H]+

1. washThe reaction mixture was washed with saturated sodium bicarbonate solution
2. dry with materialthe organic layer dried over magnesium sulphate
3. concentrationconcentrated under vacuum
4. dissolutionThe residue was dissolved in dichloromethane with a few drops of methanol
5. custompurified by column chromatography (dichloromethane—6% methanol in dichloromethane)