[Br:1][C:2]1[CH:13]=[CH:12][CH:11]=[CH:10][C:3]=1[CH2:4][C@H:5]([C:7]([OH:9])=[O:8])[NH2:6].[C:14]([Cl:17])(=O)C>CO>[ClH:17].[Br:1][C:2]1[CH:13]=[CH:12][CH:11]=[CH:10][C:3]=1[CH2:4][C@H:5]([C:7]([O:9][CH3:14])=[O:8])[NH2:6]Dissolve 2-bromo-D-phenylalanine (22.4 g, 91.8 mmol) in methanol (459 mL). Add acetyl chloride (65.3 mL, 917.7 mmol) at room temperature. Stir for 36 hours. Concentrate under reduced pressure to give the title compound (27.2 g, 92.3 mmol). MS (m/z): 258 (M+1).
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