Reacción #6235

Ecuación de reacción

4-hydroxypyridine

N-(4bromobutyl)phthalimide

1,8-diazabicyclo[5.4.0]-7-undecene

→

desired compound

Rendimiento 17.8%

4-(4-phthalimidobutyloxy)pyridine

Rendimiento 17.8%

Disolventes

DMF

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.DISTILLATIONAfter the solvent was distilled off
2. 2
   workup.ADDITIONthe mixture was poured into water
3. 3
   Extracciónextracted with ethyl acetate
4. 4
   LavadoThe mixture was washed with water
5. 5
   Secadodried over anhydrous magnesium sulfate
6. 6
   workup.DISTILLATIONthe solvent was distilled off
7. 7
   OtroThe residue was purified by column chromatography (eluent: ethyl acetate)

Procedimiento

To a solution of 4.76 g (50 mmol) of 4-hydroxypyridine and 15.52 g (55 mmol) of N-(4bromobutyl)phthalimide in 80 ml of DMF was added 8.23 ml (5 mmol) of 1,8-diazabicyclo[5.4.0]-7-undecene. The mixture was stirred at room temperature for 7 hours. After the solvent was distilled off, the mixture was poured into water and extracted with ethyl acetate. The mixture was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off. The residue was purified by column chromatography (eluent: ethyl acetate) to obtain 2.63 g of the desired compound (yield: 17.2%, colorless crystals).

Fuente