反应详情

A solution of 1-methoxy-5-methylisoquinolin-4-carboxylic acid (Intermediate-8) (1.2 g, 5.5 mmol) in HBr (48% aq. solution, 20 mL) was stirred at RT for 24 h. After completion (TLC), the reaction mixture was poured into water, filtered, washed with water (4×25 mL), and then dried to afford title compound (600 mg, 52%).

1. filtrationfiltered
2. washwashed with water (4×25 mL)
3. customdried