Reaktion #1063701

Reaktionsgleichung

dimethylamine

potassium carbonate

1-(4-benzylthiophenyl)-2-(2-chloroethoxy)ethanol

dimethylamine

potassium iodide

→

1-(4-benzylthiophenyl)-2-[2-(N,N-dimethylamino)ethoxy]ethanol hydrochloride

Lösungsmittel

water

ethyl acetate

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturwas refluxed for 4 hours
2. 2
   SonstigeThe solvent was removed by distillation under reduced pressure
3. 3
   SonstigeTo the residue thus obtained
4. 4
   SonstigeThe organic layer was separated
5. 5
   Waschenwashed with water
6. 6
   Trocknena saturated aqueous sodium chloride solution in this order, and dried over anhydrous magnesium sulfate
7. 7
   SonstigeThe solvent was removed by distillation under reduced pressure
8. 8
   workup.DISSOLUTIONThe residue was dissolved in 15 ml of acetone
9. 9
   workup.ADDITIONTo the solution was added 0.4 ml of a 5N dry hydrogen chloride-ethanol solution
10. 10
    FiltrationThe resulting crystals were collected by filtration

Vorschrift

A mixture of 600 mg of 1-(4-benzylthiophenyl)-2-(2-chloroethoxy)ethanol, 4ml of a 50% aqueous dimethylamine solution, 310 mg of potassium iodide and 5 ml of ethanol was refluxed for 4 hours. To the reaction mixture was further added 4 ml of a 50% aqueous dimethylamine solution. The reaction mixture was cooled to room temperature. The solvent was removed by distillation under reduced pressure. To the residue thus obtained were added 30 ml of ethyl acetate and 30 ml of water. The resulting mixture was adjusted to pH 10.5 with potassium carbonate. The organic layer was separated, washed with water and a saturated aqueous sodium chloride solution in this order, and dried over anhydrous magnesium sulfate. The solvent was removed by distillation under reduced pressure. The residue was dissolved in 15 ml of acetone. To the solution was added 0.4 ml of a 5N dry hydrogen chloride-ethanol solution. The resulting crystals were collected by filtration to obtain 590 mg of 1-(4-benzylthiophenyl)-2-[2-(N,N-dimethylamino)ethoxy]ethanol hydrochloride (compound No. 222).

Quelle