Réaction #2610

Équation de réaction

4-Amino-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(4-methoxyphenyl)benzamide

2,5-dimethoxytetrahydrofuran

→

title compound

Rendement 82.6%

4-(Pyrrole-1-yl)-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(4-methoxyphenyl)benzamide

Rendement 82.6%

Solvants

acetic acid

Conditions de réaction

Traitement

1. 1
   Températureheated for 1 hour
2. 2
   Températureunder reflux
3. 3
   TempératureAfter cooling
4. 4
   workup.DISTILLATIONacetic acid was distilled off under a reduced pressure
5. 5
   workup.DISSOLUTIONthe residue was dissolved in ethyl acetate
6. 6
   Lavagethe organic layer was washed with water and saturated brine
7. 7
   Séchagedried on anhydrous sodium sulfate
8. 8
   workup.DISTILLATIONThereafter, the solvent was distilled off under a reduced pressure
9. 9
   Autrethe resulting residue was purified by a silica gel column chromatography (hexane:ethyl acetate=1:4)

Mode opératoire

4-Amino-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(4-methoxyphenyl)benzamide (237.0 mg, 0.50 mmol) was dissolved in acetic acid (5.0 ml), and the solution was mixed with 2,5-dimethoxytetrahydrofuran (0.065 ml, 0.50 mmol) and heated for 1 hour under reflux. After cooling, acetic acid was distilled off under a reduced pressure, the residue was dissolved in ethyl acetate, and the organic layer was washed with water and saturated brine, and dried on anhydrous sodium sulfate. Thereafter, the solvent was distilled off under a reduced pressure, and the resulting residue was purified by a silica gel column chromatography (hexane:ethyl acetate=1:4) to obtain 217.0 mg (82,7%) of the title compound in a colorless amorphous form.

Source