Thionyl Chloride → HCID 178487534, compound

Participants

Reaction Conditions

Reaction Steps

2-(2-cyano-5-methoxyphenyl)acetic acid (3.8 g, 19.88 mmol), and SOCl2 (20 mL, 274 mmol) were stirred in dichloromethane (25 mL) at RT. The suspension became a solution over 8 h. The reaction was stirred overnight. The volitile organics were removed under vacuum and the residue was taken up in DCM and filtered. The filtrate was concentrated and then dissolved in 4 N HCl dioxane (30 mL) and transferred to a sealed vessel and heated to 60° C. for 3 h. The reaction was cooled and the solid was collected, washed with dioxane, and dried under vacuum to give the product 1-chloro-6-methoxyisoquinolin-3-ol (3.3 g, 70% yield). 1H NMR (400 MHz, CHLOROFORM-d) δ 8.10 (d, J=9.6 Hz, 1H), 7.12 (dd, J=9.3, 2.5 Hz, 1H), 6.95 (s, 2H), 3.98 (s, 3H).

Provenance & Evidence