1-amino-3-methylbutan-2-ol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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. 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 evaporated to dryness The residue is stirred with diethyl ether recrystallised with acetonitrile

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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 extracted with diethyl ether, then recrystallised with acetonitrile. 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 evaporated to dryness The residue is extracted with diethyl ether recrystallised with acetonitrile