反应详情

温度

120 °C

2′-Methoxy-3′-amino-biphenyl-3-carboxylic acid 1e (2.5 g, 10.3 mmol) was dissolved in 100 mL of hydrobromic acid (40%). The reaction mixture was heated to reflux at 120° C. overnight, and the reaction was monitored by TLC until the disappearance of the starting materials. The mixture was concentrated under reduced pressure and the resulting residue was purified by silica gel column chromatography to obtain the title compound 3′-amino-2′-hydroxy-biphenyl-3-carboxylic acid hydrobromide 1f (2.4 g, 88.8%) as a khaki solid.

1. temperatureThe reaction mixture was heated
2. concentrationThe mixture was concentrated under reduced pressure
3. customthe resulting residue was purified by silica gel column chromatography