Water → HCID 22176142, compound

Participants

Reaction Steps

To a solution of (3-{[(tert-butoxycarbonyl)amino]methyl}-4-butoxy-2-neopentyl-1-oxo-1,2-dihydro-6-isoquinolinyl)methyl methanesulfonate (1.1 g, 2.11 mmol) in N,N-dimethylformamide (20 mL) was added potassium phthalimide (0.47 g, 2.5 mmol), and the mixture was stirred at room temperature for 17 h. The reaction mixture was poured into water (200 mL) and extracted with ethyl acetate (100 mL×2). The organic layers were combined, washed with 0.2N hydrochloric acid (100 mL), saturated aqueous sodium hydrogencarbonate (50 mL) and brine (50 mL), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=5:2 (v/v)) to give tert-butyl{6-[(1,3-dioxo-1,3-dihydro-2H -isoindol-2-yl)methyl]-2-isobutyl-1-oxo-4-phenyl-1,2-dihydro-3-isoquinolinyl}methylcarbamate (0.99 g, 84%) as colorless crystals.

Provenance & Evidence