Boron tribromide → HCID 58998504, compound

Participants

Reaction Steps

To a chilled suspension of 7-Fluoro-6-methoxy-2-(4-nitrophenyl)-2H-isoquinolin-1-one (3.14 g, 10 mmol) in dichloromethane (50 mL) was added neat boron tribromide (8 mL, 85 mmol) via syringe. The brown suspension was stirred at room temperature for 24 hr. The solvent was decanted, washed with cold DCM, leaving a black residue, which was triturated on ice with methanol (80 mL). The solid was collected by filtration, then washed with water and dried to give 2.66 g (89%) of 7-Fluoro-6-hydroxy-2-(4-nitro-phenyl)-2H-isoquinolin-1-one. RP-HPLC: 3.93 min; ES-MS (M+H)+=301.0; 1H-NMR (DMSO-d6) δ (ppm): 6.66 (d,1), 7.16 (d, 1), 7.43 (d, 1); 7.76 (d, 2), 7.84 (d, 1), 8.33 (d, 2), 11.1 (br s, 1).

Provenance & Evidence