Réaction #5825

Équation de réaction

dimethylformamide

homopiperazine

sodium bicarbonate

benzyloxycarbonyl chloride

→

title compound

Rendement 65.5%

N-Benzyloxycarbonylhomopiperazine

Rendement 65.5%

Solvants

water

Conditions de réaction

Traitement

1. 1
   workup.STIRRINGthe mixture was stirred at a room temperature overnight
2. 2
   AutreAfter evaporating off dimethylformamide under a reduced pressure
3. 3
   Extractionthe reaction mixture was extracted three times with 100 ml of chloroform
4. 4
   Séchagethe extract was dried over magnesium sulfate
5. 5
   Autreevaporated
6. 6
   Autreto remove the solvent under a reduced pressure
7. 7
   Lavageeluted with chloroform/methanol (9:1)

Mode opératoire

To 230 ml of dimethylformamide were added 25 g of homopiperazine and 5.4 g of sodium bicarbonate and then 25 ml of water followed by dropwise addition of 10 g of benzyloxycarbonyl chloride with stirring under ice cooling, and the mixture was stirred at a room temperature overnight. After evaporating off dimethylformamide under a reduced pressure, the reaction mixture was extracted three times with 100 ml of chloroform, and the extract was dried over magnesium sulfate and evaporated to remove the solvent under a reduced pressure. The resulting residue was applied to a silica gel column and eluted with chloroform/methanol (9:1), to obtain 9 g of the title compound as a light yellow liquor liquid.

Source