Phenol → HCID 136502901, compound

Participants

Reaction Steps

A mixture of Example 74f (0.26 g, 0.53 mmol), phenol (0.060 g, 0.64 mmol) and cesium carbonate (0.21 g, 0.63 mmol) in dimethylsulfoxide (5 mL) was heated at 110° C. for 6 hours. After cooling to room temperature, the reaction mixture was partitioned between water and ethyl acetate. The aqueous layer was extracted with additional ethyl acetate three times. The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated. The residue was then treated with 15 mL of ethanol and 1 mL of concentrated H2SO4. The mixture was heated under reflux overnight. The reaction mixture was cooled to room temperature and partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated. The residue was purified by flash chromatography on silica gel eluting with 40-80% ethyl acetate to afford 0.14 g (61%) of the title compound.

Provenance & Evidence