反应详情

To an ice cooled solution of 198 mg (0.55 mmol) [4-(tert-butyl-dimethyl-silanyloxy)-indol-1-yl]-acetic acid tert-butyl ester in 2 ml of THF was added a 1 M solution of tetrabutylammonium fluoride hydrate in tetrahydrofuran (0.55 ml, 0.55 mmol). The reaction mixture was stirred for 1 h at ambient temperature. Diethyl ether was added and the ether solution was washed with saturated aqueous NH4Cl solution, water and brine. Evaporation of the solvent under reduced pressure gave 49 mg (0.2 mmol, 36%) of (4-hydroxy-indol-1-yl)-acetic acid tert-butyl ester as white crystals.

1. washthe ether solution was washed with saturated aqueous NH4Cl solution, water and brine
2. customEvaporation of the solvent under reduced pressure