反应详情

To a solution of 5-[4-(2,6-Dichloro benzyl)-piperazine-1-yl]-4-methyl-benzofuran-2-carboxylic acid ethyl ester (0.08 g, 0.0001 mol) in THF:Water:Methanol (3:2:1) mixture (19 ml) was added lithium hydroxide (0.02 g, 0.0005 mol) at 0° C. The reaction mixture was stirred for 2 hours. The completion of the reaction was confirmed by TLC. Solvent was concentrated under reduced pressure added ice water. The pH of the mixture was made acidic with 1N HCl and the solid separated was filtered. After drying under vacuum, isolated 5-[4-(2,6-Dichloro benzyl)-piperazine-1-yl]-4-methyl-benzofuran-2-carboxylic acid (70 mg, 94%).

1. concentrationSolvent was concentrated under reduced pressure
2. additionadded ice water
3. customthe solid separated
4. filtrationwas filtered
5. customAfter drying under vacuum