反应详情

26.5 g (0.11 mol) of methyl (2′-fluoro[1,1′-biphenyl]4-yl)acetate are introduced into 50 ml of ethanol and, at room temperature, a solution of 12.8 g (0.19 mol) of potassium hydroxide pellets in 25 ml of water is added. The mixture is then heated under reflux for 4 h. After cooling, the crude mixture is concentrated in vacuo, and the residue is dissolved in 100 ml of water and acidified with concentrated hydrochloric acid. The precipitate is filtered off and washed several times with water, and the solid is dried. Example VI is obtained in the form of white crystals.

1. temperatureThe mixture is then heated
2. temperatureunder reflux for 4 h
3. temperatureAfter cooling
4. concentrationthe crude mixture is concentrated in vacuo
5. dissolutionthe residue is dissolved in 100 ml of water
6. filtrationThe precipitate is filtered off
7. washwashed several times with water
8. customthe solid is dried
9. customExample VI is obtained in the form of white crystals