反应详情

(S)-2-(tert-Butoxycarbonylamino)-3-(4-iodophenyl)propanoic acid (35.1 g) was dissolved in DMF (200 mL) and to the resulting solution was added N-ethylmorpholine (17.0 mL) followed by TBTU (28.8 g). The mixture was stirred at room temperature for 0.5 h and then cooled to 0° C. 0.88 Ammonia (11.1 mL) was added and the mixture was allowed to warm to room temperature. The mixture was allowed to stir at room temperature for 16 h and was then poured into water and the resulting precipitate removed by filtration. The solid was dried in vacuo to give the sub-titled compound (34.2 g).

1. temperaturecooled to 0° C
2. temperatureto warm to room temperature
3. stirringto stir at room temperature for 16 h
4. customthe resulting precipitate removed by filtration
5. customThe solid was dried in vacuo