Phosphorus oxychloride → HCID 71742711, compound

Participants

Reaction Steps

A solution of 5-chloro-4-methoxyisoquinolin-1-(2H)-one (6.4 g, 30.5 mmol) in POCl3 (45 ml) was refluxed for 18 h. The solvent was evaporated under reduced pressure and the residue was diluted with cold water. The precipitated solid was filtered, washed with water to get crude compound (4 g, 57.4%) as a light brown colored solid. 1H NMR (400 MHz, CDCl3): δ ppm 8.28-8.25 (d, J=12 Hz, 1H), 7.87 (s, 1H), 7.79-7.76 (d, J=12 Hz, 1H), 7.58-7.54 (m, 1H), 4.03 (s, 3H); MS: MS m/z 228.0 (M++1).

Provenance & Evidence