反应详情

温度

0 °C

31.1 g (0.225 mole) of ground potassium carbonate are mixed with 12.47 g (0.09 mole) of (R)-2-aminobutanamide hydrochloride in 160 ml of acetone. The reaction mixture is cooled to 0° C. and a solution of 15.23 g (0.108 mole) of 4-chlorobutyryl chloride in 25 ml of acetone is introduced dropwise. After the addition, the reaction mixture is allowed to return to ambient temperature; the insoluble matter is filtered off and the filtrate evaporated under reduced pressure. The crude residue obtained is stirred in 100 ml of anhydrous ether for 15 minutes at a temperature between 5° and 10° C. The precipitate is filtered off, washed twice with 30 ml of ether, and dried in vacuo to obtain 16 g of (R)-N-[1-(aminocarbonyl)propyl]-4-chlorobutanamide.

1. additionAfter the addition
2. customto return to ambient temperature
3. filtrationthe insoluble matter is filtered off
4. customthe filtrate evaporated under reduced pressure
5. customThe crude residue obtained
6. filtrationThe precipitate is filtered off
7. washwashed twice with 30 ml of ether
8. customdried in vacuo