Phenacyl bromide → HCID 118260105, compound

Participants

Reaction Steps

(S)-2-tert-Butoxycarbonylamino-3-(4-but-2-ynyloxy-phenyl)-propionic acid (380 mg) was dissolved in ethyl acetate (5.0 mL). A commercially available reagent of 2-bromoacetophenone (164 mg) and Et3N (115.7 μL) were added and the mixture was stirred at room temperature for 2 days. To the reaction solution was added ethyl acetate and the mixture was washed with water and a saturated brine in this order. The organic layer was dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure. The product was purified by recrystallization in 15% ethyl acetate/n-hexane to obtain 2-oxo-2-phenyl-ethyl (S)-2-tert-butoxycarbonylamino-3-(4-but-2-ynyloxy-phenyl)-propionate (277 mg, yield 89% over 2 steps) as colorless crystal (LCMS m/z 452 (M+1) Rt 232 min.).

Provenance & Evidence