Ethylamine → HCID 10426278, compound

Participants

Reaction Steps

(5)(3S)-3-(tert-Butoxycarbonylamino)-2-hydroxy-4-phenylbutanoic acid (6.3 g, 21 mmol) and 1-hydroxybenzotriazole (HOBt) (3.0 g, 22.4 mmol) were dissolved in DMF (45 mL) and cooled in an ice bath. 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) (4.6 g, 24 mmol) was added, followed by aqueous ethylamine solution (3.0 mL). The solution was stirred for 18 hours. The solution was diluted into EtOAc (200 mL) and washed with 1M HCl, saturated aqueous NaHCO3, and saturated aqueous NaCl. The organic layer was dried over anhydrous MgSO4 and concentrated in vacuo to yield ((1S)-1-benzyl-3-ethylamino-2-hydroxy-3-oxo-propyl)carbamic acid 1,1-dimethylethyl ester (5.8 g, 84%) as a white solid.

Provenance & Evidence