Bromine → 4-Bromo-2-methyl-6-(1-methylpyrazol-4-yl)isoquinolin-1-one

Participants

Reaction Steps

Bromine (1.8 g, 11.25 mmol) in HOAc (6 mL) was added to the title compound of 2-methyl-6-(1-methylpyrazol-4-yl)isoquinolin-1-one (3 g, 12.5 mmol) in HOAc (24 mL) at 0° C. The mixture was stirred at 30° C. for 15 min, quenched with H2O (100 mL), and the resulting yellow solid was collected by filtration to give the title compound (2.04 g, 56%). 1H NMR (CDCl3, 400 MHz) δ 8.42 (d, J=8.4 Hz, 1H), 7.87 (d, J=28.8 Hz, 2H), 7.82 (d, J=15.6 Hz, 2H), 7.65 (d, J=8 Hz, 2H), 7.38 (s, 1H), 4.00 (s, 3H), 3.61 (s, 3H). LCMS: 318.0 (M+H)+

Provenance & Evidence