Cesium carbonate → 2-Chloro-4-[4-(3-chloro-phenylethynyl)-2-methyl-imidazol-1-yl]-pyridine

関与物質

反応条件

反応手順

To a solution of 400 mg (1.85 mmol) of 4-(3-chloro-phenylethynyl)-2-methyl-1H-imidazole and 1.12 ml (1.46 g, 11.1 mmol) of 2-chloro-4-fluoropyridine in 5 ml of DMF were added 1.2 g (3.69 mmol) of cesium carbonate. The mixture was heated to 100° C. for 4 h, allowed to cool and concentrated in vaccuo. The residue was taken up in 20 ml ethyl acetate and the organic phase was washed twice with 20 ml of water and dried over magnesium sulfate. After treatment with charcoal, the solution was filtered and concentrated to yield 531 mg (1.62 mmol, 88%) of the title compound as an off-white crystalline solid, MS: m/e=328.1, 330.1 (M+H+).

情報源と証拠