Cesium carbonate → HCID 69069989, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (6-chloro-2-methoxy-pyrimidin-4-yl)-[2(4-trifluoromethoxyphenyl)-ethyl]amine [475 mg, 1.36 mmol, Intermediate (13)], 5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-2,3-dihydro-benzofuran-2-carboxylic acid (266 mg, 0.91 mmol), Cs2CO3 (1.19 g, 3.6 mmol) and tetrakis(triphenylphosphine)palladium (146 mg, 0.13 mmol) in water (2 mL) and ethylene glycol dimethyl ether (8 mL) is degassed with bubbling nitrogen for 5 minutes and heated at 60° C. for 23 hours. The reaction mixture is cooled, diluted with water (200 mL) and brine (50 mL), and acidified with 1N hydrochloric acid to pH 5. The mixture is extracted three times with EtOAc (150 mL) and the extracts are concentrated in vacuo. The residue is subjected to flash column chromatography on silica (5 g) eluting with 0 to 20% MeOH in ethyl acetate. The product is dissolved in ether and treated with 1 M hydrogen chloride in ether to afford 5-{2-methoxy-6-[2-(4-trifluoromethoxy-phenyl)-ethylamino]-pyrimidin-4-yl}-2,3-dihydro-benzofuran-2-carboxylic acid hydrochloride (148 mg, Example 88) as a solid. MS: 476 (M+H); LCMS: RT=2.78 minutes, MS: 474 (M−H). IC50=3.1 nM

Provenance & Evidence