反应详情

A solution of methyl 2-(1-(tert-butoxycarbonyl)-5-methoxy-1H-indol-2-yl)-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate (180.0 mg, 0.36 mmol) in 20% TFA/DCM (30 mL) was stirred overnight at room temperature and then quenched by the addition of water (100 ml). The reaction mixture was adjusted to pH 7 with aq. sodium bicarbonate, extracted with chloroform, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by a silica gel column with 0.1%-1% methanol in dichloromethane to afford methyl 3-(isopropyl(methyl)amino)-2-(5-methoxy-1H-indol-2-yl)quinoxaline-6-carboxylate as a light yellow solid (100.0 mg, 69%).

1. customquenched by the addition of water (100 ml)
2. extractionextracted with chloroform
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by a silica gel column with 0.1%-1% methanol in dichloromethane