Hydrogen Bromide → {(R)-1-[2-fluoro-4-(6-hydroxy-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl)-phenyl]-pyrrolidin-3-yl}-methyl-carbamic acid tert-butyl ester

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Reaction Steps

According to Method L, {(R)-1-[2-fluoro-4-(6-methoxy-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl)-phenyl]-pyrrolidin-3-yl}-methyl-carbamic acid tert-butyl ester was treated with hydrogen bromide. The raw product (5.5 g) was dissolved in 1,4-dioxan (50 mL) and water (50 mL), sodium hydrogencarbonate (2.6 g) and lastly Boc2O (3.38 g) were added. After 3 hours the 1,4-dioxan was removed in the rotary evaporator and the residue was distributed between water and ethyl acetate. The organic phase was dried over sodium sulfate and concentrated. In this way the product was obtained with molecular weight 455.53 (C25H30FN3O4); MS (ESI): 456 (M+H+).

Provenance & Evidence