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

Participants

Reaction Conditions

Reaction Steps

To a solution of (1R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethanol (40 g, 138 mmol) in dioxane (400 mL) was added 4,6-dichloropyrimidin-2-amine (113 g, 690 mmol) and Cs2CO3 (132 g, 405 mmol). The mixture was heated for 24 h at 80° C. The reaction was then cooled to RT and filtered. The solvent was removed in vacuo, then CH2Cl2 and heptane was added. The solvent volume was reduced until a solid precipitated out. The solid was filtered and the procedure repeated several times to provide 4-chloro-6-[(1R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoro-ethoxy]pyrimidin-2-amine as a white solid.

Provenance & Evidence