Water → 2-(3-{5-[(4R,5S)-4,5-Dimethyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}-5-{[(2S)-1-methoxypropan-2-yl]oxy}phenoxy)-5-(methylsulfonyl)pyrazine

Participants

Reaction Steps

3-{5-[(4R,5S)-4,5-Dimethyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}-5-{[(2S)-1-methoxypropan-2-yl]oxy}phenol (420 mg, 1.22 mmol) synthesized in Example (109c) was dissolved in acetonitrile (20 mL), and 2-chloro-5-(methylsulfonyl)pyrazine (345 mg, 1.46 mmol) synthesized in Example (97c) and cesium carbonate (1.02 g, 3.13 mmol) were added at room temperature, followed by stirring at room temperature overnight under nitrogen atmosphere. To this reaction solution, water (30 mL) was added, and extraction was carried out with methylene chloride (40 mL). The organic layer was washed with saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: methanol/methylene chloride=2%-3%) to afford the desired compound (513 mg, yield 84%) as a white solid.

Provenance & Evidence