Thionyl Chloride → (5-Chloromethyl-pyridin-3-yl)-(4-fluoro-phenyl)-methanone

Participants

Reaction Steps

To a solution of (4-fluoro-phenyl)-(5-hydroxymethyl-pyridin-3-yl)-methanone (1I) (410 mg, 1.8 mmol) in 25 mL of acetonitrile at 0° C., is added thionyl chloride (0.65 mL, 8.9 mmol) drop wise. After being stirred at room temperature for 2 hours, the reaction mixture is concentrated to remove most of thionyl chloride and acetonitrile. The residue is dissolved in 30 mL of CH2Cl2 and basified by saturated sodium bicarbonate to PH˜8.0. The organic layer is dried over sodium sulfate and concentrated to give (5-chloromethyl-pyridin-3-yl)-(4-fluoro-phenyl)-methanone (1J) (390 mg, yield 87%) as light yellow waxy solid. MS (ESI) m/e 250 (M+H+).

Provenance & Evidence