Phosphorus oxychloride → 1-Chloro-6-methoxyisoquinoline

Participants

Reaction Steps

6-Methoxy-2H-isoquinolin-1-one in POCl3 was heated to gentle reflux for 3 h then evaporated in vacuo. The residue was poured into ice-water (20 mL) and neutralized to pH 10 with 10 M NaOH. Extracted with CHCl3. The organic layer was washed with brine, dried over MgSO4, filtered, evaporated. The residue was purified by flash chromatography (hexane-EtOAc) to afford a white solid.

Provenance & Evidence