Réaction #2161614

Équation de réaction

N,N-dimethylformamide

7-hydroxy-8-propyl-4-(trifluoromethyl)-2H-chromen-2-one

1,4-dibromobutane

potassium carbonate

→

title compound

Rendement 105.4%

7-(4-bromobutoxy)-8-propyl-4-(trifluoromethyl)-2H-chromen-2-one

Rendement 105.4%

Solvants

water

Conditions de réaction

Traitement

1. 1
   Extractionextracted with ethyl acetate
2. 2
   LavageSubsequently, the organic layer was washed with saturated saline
3. 3
   Autredried
4. 4
   Concentrationconcentrated under vacuum
5. 5
   AutreThe obtained residue was purified

Mode opératoire

An N,N-dimethylformamide (5 mL) solution of 7-hydroxy-8-propyl-4-(trifluoromethyl)-2H-chromen-2-one (500 mg, 1.84 mmol), 1,4-dibromobutane (2.19 mL, 18.36 mmol), and potassium carbonate (375 mg, 2.76 mmol) was stirred overnight at room temperature. The reaction solution was added with water and extracted with ethyl acetate. Subsequently, the organic layer was washed with saturated saline, dried using anhydrous sodium sulfate, and concentrated under vacuum. The obtained residue was purified using silica-gel chromatography (hexane:ethyl acetate=10:1), and the title compound (0.79 g) was obtained as yellow oil.

Source