Cesium carbonate → HCID 57809940, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-[4-(5-fluoro-2-hydroxyphenyl)-2-hydroxy-4-methyl-2-trifluoromethylpentyl]-1H-quinolin-4-one (0.05 g), methyl 2-chloro-2,2-difluoroacetate (0.014 mL) and cesium carbonate (0.195 g) in 1.5 mL of DMF was heated at 60° C. for 20 hours, cooled to room temperature, diluted with ethyl acetate, and washed with aqueous acetic acid, water, and brine. The residue was purified by reverse-phase HPLC using acetonitrile/water as the eluent. The product rich fractions were concentrated in vacuo and provided 1-[4-(2-difluoromethoxy-5-fluorophenyl)-2-hydroxy-4-methyl-2-trifluoromethylpentyl]-1H-quinolin-4-one, m.p. 150° C.-155° C.

Provenance & Evidence