反应详情

(S)-2-(4-Amino-benzoylamino)-3-(4-bromo-phenyl)-propionic acid methyl ester (415 mg) was prepared from (S)-2-amino-3-(4-bromo-phenyl)-propionic acid methyl ester-hydrochloride (1.5 g, 5.1 mmol) and 4-amino-benzoic acid (698 mg, 5.1 mmol) as described in Procedure A, except for an adapted work-up. After reaction completion, the reaction mixture was poured onto 100 mL of 1N HCl and 100 mL of EtOAc. The organic layer was washed with 1N HCl (2×), 10% sodium carbonate, dried over sodium sulfate and evaporated. The crude material was purified over silica gel (DCM-EtOAc, 9-1).

1. customAfter reaction completion
2. washThe organic layer was washed with 1N HCl (2×), 10% sodium carbonate
3. dry with materialdried over sodium sulfate
4. customevaporated
5. customThe crude material was purified over silica gel (DCM-EtOAc, 9-1)