反应详情

温度

100 °C

To a mixture of cesium carbonate (435 mg, 1.34 mmol) and 2-(azetidin-3-yl)-5-methyl-1H-benzo[d]imidazole dihydrochloride (0.100 g, 0.384 mmol) was added NMP (1 mL) and 3-chloro-2-fluoropyridine (0.105 g, 0.798 mmol). The reaction mixture was degassed and heated to 100° C. for 1 h, then heated to 130° C. for 2 h. The reaction was diluted with EtOAc. The organic phase was washed with water (2×), brine (1×), dried over MgSO4, filtered, and concentrated. Purification by flash column chromatography on silica gel (30% to 90% EtOAc in hexanes) followed by purification by reverse phase HPLC (10% to 50% water/MeCN followed by neutralization of the TFA salt with saturated NaHCO3) gave 2-(1-(3-chloropyridin-2-yl)azetidin-3-yl)-5-methyl-1H-benzo[d]imidazole (0.011 g, 0.037 mmol, 10% yield) as a dark yellow foam.

1. customThe reaction mixture was degassed
2. temperatureheated to 130° C. for 2 h
3. additionThe reaction was diluted with EtOAc
4. washThe organic phase was washed with water (2×), brine (1×)
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. customPurification by flash column chromatography on silica gel (30% to 90% EtOAc in hexanes)
9. customfollowed by purification by reverse phase HPLC (10% to 50% water/MeCN