Phosphorus oxychloride → HCID 86683175, compound

Participants

Reaction Steps

A solution of 3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-6-methoxyisoquinolin-1-ol (250 mg, 0.808 mmol) in POCl3 (5 mL, 53.6 mmol) was refluxed for 14 h. Concentrated the solvent. The residue was taken into a mixture of DCM and 4N NaOH solution. Adjust pH to 7. The organic phase was collected and dried over sodium sulfate, filtered, then concentrated under vacuum. The crude material was purified by silica gel chromatography using 10% EtOAc/Hexanes as eluent to give 200 mg of the desired product 1-chloro-3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-6-methoxyisoquinoline as a solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.18 (d, J=9.3 Hz, 1H), 7.77 (s, 1H), 7.65-7.55 (m, 2H), 7.21 (dd, J=9.2, 2.4 Hz, 1H), 7.08 (d, J=2.3 Hz, 1H), 6.95 (d, J=8.3 Hz, 1H), 4.30 (s, 4H), 3.95 (s, 3H).

Provenance & Evidence