反应详情

To 220 mg of 4-isopropoxy-3-methyl-benzofuran-2-carboxylic acid tert-butyl ester was added 3 mL of TFA/dichloromethane (1:1). The solution was stirred at room temperature for 3 h. The solvents were removed under vacuum and the residue was triturated with acetonitrile. Filtration of the precipitate gave 210 mg of 4-isopropoxy-3-methyl-benzofuran-2-carboxylic acid as a white solid.

1. customThe solvents were removed under vacuum
2. customthe residue was triturated with acetonitrile
3. filtrationFiltration of the precipitate