反应详情

A solution of (2R)-2-[(methoxycarbonyl)amino]-4-(4-methoxyphenyl)-butanoic acid (5.0 g, 18.7 mmol) in 5 mL of 30% HBr in acetic acid was heated at 60° C. overnight. The reaction mixture was cooled to room temperature and the solvent was removed under reduced pressure to give the title compound as an orange solid.

1. customthe solvent was removed under reduced pressure