Triethylamine → HCID 57637044, compound

Participants

Reaction Steps

46.00 g (206.07 mmol) 3-benzyloxycarbonylamino-propionic acid, 51.37 g (267.95 mmol) 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 27.85 g (206.07 mmol) hydroxybenzotriazole (HOBT) and 37.14 ml (267.95 mmol) triethylamine are placed in 700 ml dichloromethane, the mixture is stirred for 0.5 hours at 0°, then 23.70 g (229.73 mmol) 1-amino-3-methyl-butan-2-ol are added. The reaction mixture is stirred for 16 hours at ambient temperature. Then it is extracted with potassium carbonate solution and dichloromethane. The organic phase is washed with 1 molar sodium hydroxide solution, dried and evaporated to dryness. The residue is stirred with diethyl ether, then recrystallised with acetonitrile.

Provenance & Evidence