Cesium carbonate → (R)-4-(1-(4-bromo-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethoxy)-6-chloro-2-methylpyrimidine

Participants

Reaction Conditions

Reaction Steps

To a solution of 1(R)-1-[4-bromo-2-(3-methyl-1H-pyrazol-1-yl)phenyl]-2,2,2-trifluoroethanol (15.7 g, 46.3 mmol, Intermediate 1) in dioxane (200 mL) was added 4,6-dichloro-2-methylpyrimidine (30.6 g, 51 mmol) and Cs2CO3 (61.2 g, 187 mmol). The reaction mixture was heated to 80° C. for 30 h, then cooled to RT, and filtered. The residue was concentrated in vacuo and purified by normal phase column chromatography on silica gel (CH2Cl2/heptane) to provide (R)-4-(1-(4-bromo-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethoxy)-6-chloro-2-methylpyrimidine as a white solid.

Provenance & Evidence