反应详情

3-Biphenyl-4-yl-(2S)-(5-bromo-2-hydroxy-benzoylamino)-propionic acid methyl ester (2.75 g, 35%) was prepared from (2S)-amino-3-biphenyl-4-yl-propionic acid methyl ester-hydrochloride (5.0 g, 17.2 mmol), 5-bromo-2-hydroxy-benzoic acid (3.7 g, 17.2 mmol) as described in general procedure A except for an adapted work-up. After reaction completion, the reaction mixture was poured onto 150 mL of 1N HCl and 150 mL of EtOAc. The organic layer was washed with 1N HCl, saturated sodium bicarbonate, dried over sodium sulfate and evaporated. The crude material was purified over silica gel (7:3, DCM-hexanes).

1. customAfter reaction completion
2. washThe organic layer was washed with 1N HCl, saturated sodium bicarbonate
3. dry with materialdried over sodium sulfate
4. customevaporated
5. customThe crude material was purified over silica gel (7:3, DCM-hexanes)