反应详情

5-Chloro-2-hydroxy-benzoic acid (2.5 g, 28.97 mmol) was coupled with 2-amino-3-(4-bromo-phenyl)-propionic acid methyl ester hydrochloride (4.26 g, 28.96 mmol) with HBTU (6.59 g, 34.76 mmol) and diisopropylethylamine (8 ml, 86.91 mmol) as per general procedure A to yield the corresponding 3-(4-Bromo-phenyl)-(2S)-(5-chloro-2-hydroxy-benzoylamino)-propionic acid methyl ester in 50% yield.