Cesium carbonate → 4-chloro-6-[(R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethoxy]-2-methylsulfanylpyrimidine

Participants

Reaction Conditions

Reaction Steps

To a solution of (R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethanol (5.00 g, 17.2 mmol) and 4,6-dichloro-2-(methylthio)pyrimidine (3.36 g, 17.2 mmol) in dioxane (250 mL) was added Cs2CO3 (16.8 g, 51.6 mmol). The reaction mixture was then heated to 70° C. for 90 h, then cooled to RT. The reaction mixture was quenched with water and extracted with EtOAc. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. Purification on a 120 g Isco RediSep silica cartridge (EtOAc:heptane) provided 4-chloro-6-[(R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethoxy]-2-methylsulfanylpyrimidine as a white solid.

Provenance & Evidence