Phosphorus oxychloride → 2-Chloro-6-methoxy-3-(trifluoromethyl)quinoline

Participants

Reaction Steps

A solution of 6-methoxy-3-(trifluoromethyl)quinolin-2(1H)-one (4.60 g, 18.9 mmol) in POCl3 (30 mL) was refluxed for 2.5 hours. The solvent was removed under reduced pressure and the residue was neutralized by 2M NaOH to pH 7. An EtOAc workup was followed by removal of volatiles under reduced pressure. The residue was purified by column chromatography on silica gel (PE/EtOAc=15/1) to give the desired product (4.60 g, yield 94%).

Provenance & Evidence