反应详情

温度

80 °C

Two grams (2.00 g) of N-[2-(4-benzyloxy-3-methoxyphenyl)ethyl]-3-hydroxy-2-(4-methylphenyl)acrylamide (4.79 mmol), 1.21 g (7.19 mmol) of 48% hydrobromic acid and 20 ml of acetic acid were mixed and stirred at 80° C. for 1.5 hours. The solvent was distilled off from the reaction mixture under reduced pressure and the residue was subjected to silica gel column chromatography (eluent, hexane:ethyl acetate=2:1) to give 630 mg of 3-hydroxy-N-[2-(4-hydroxy-3-methoxyphenyl)ethyl]-2-(4-methylphenyl)acrylamide.

1. distillationThe solvent was distilled off from the reaction mixture under reduced pressure