反应详情

A solution of 3-[4-(2-bromo-benzoyl)-piperazin-1-yl]-3-oxo-propionic acid tert-butyl ester (400 mg, 0.97 mmol) in dioxane.HCl (4 mL) was stirred at 0° C. for 30 minutes. The reaction mixture was concentrated to afford 300 mg of 3-[4-(2-bromo-benzoyl)-piperazin-1-yl]-3-oxo-propionic acid. LCMS: 356.02 (M+1)+, 96.9%, H1NMR: (DMSO-d6): δ 12.6 (s, 1H), 7.7 (d, 1H), 7.54-7.32 (m, 3H), 3.7-3.4 (m, 8H), 3.2-3.06 (m, 2H).

1. concentrationThe reaction mixture was concentrated