Water → 14-bromo-9-tert-butyl-2-fluoro-3-methoxy-5,6,10,11,12,13-hexahydroazocino[4',3':4,5]pyrrolo[2,1-a]isoquinolin-8(9H)-one

Participants

Reaction Steps

To a solution of 250 mg 27a in 7 mL dimethylformamide was added 120 mg N-bromosuccinimide. The reaction mixture was stirred at room temperature for 1 h. Water was added and the mixture was extracted with 2×ethyl acetate. The combined organic phases were washed with water and brine, dried and concentrated. The crude product was triturated with heptane/diisopropyl ethyl ether (1:1) to afford 230 mg of 27b as a white solid.

Provenance & Evidence