反应详情

温度

0 °C

2.50 g (11.8 mmol) of 2-(2,4-dinitrophenyl)ethanol, 5.24 g (11.8 mmol) of (2E)-3-(4-{[4-(4,4,5,5,5-pentafluoropentoxy)benzoyl]oxy}phenyl)acrylic acid, 144 mg (1.2 mmol) of 4-Dimethylaminopyridine are dissolved in 30 ml of dichloromethane. 2.48 g (13.0 mmol) of N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC hydrochloride) are added at 0° C. The solution is stirred for 1 h at 0° C. and allowed to stir at room temperature overnight. After 22 hours at room temperature the reaction mixture is partitioned between dichloromethane and water. The organic phase is washed repeatedly with water, dried over sodium sulphate, filtered and concentrated by rotary evaporation. Chromatography of the residue on 200 g silica gel using toluene:ethyl acetate 95:5 as eluant and crystallization form ethylacetate:hexane mixture to yield 5.35 g (71%) 2-(2,4-Dinitrophenyl)ethyl (2E) 3-{4-[(4-(4,4,5,5,5-pentafluoropentoxy)benzoyl)oxy]phenyl}acrylate as colorless crystals.

1. stirringto stir at room temperature overnight
2. customAfter 22 hours at room temperature the reaction mixture is partitioned between dichloromethane and water
3. washThe organic phase is washed repeatedly with water
4. dry with materialdried over sodium sulphate
5. filtrationfiltered
6. concentrationconcentrated by rotary evaporation
7. customcrystallization
8. customform ethylacetate