Water → HCID 86644309, compound

Participants

Reaction Steps

To a solution of 4-[4-ethyl-4′-(trimethylsilylethynyl)biphenyl-3-yl]-2,2,6,6-tetramethyl-pyran-3,5-dione (0.143 g, 0.32 mmol) in methanol (6.5 ml) is added powdered potassium carbonate (0.177 g, 1.28 mmol), and the mixture is stirred at room temperature for 1 hour. Water is then added to dissolve all inorganics, and the mixture is concentrated in vacuo. 2M hydrochloric acid is added to achieve pH 2-3, then the desired material is extracted with ethyl acetate (×3). All organics are combined, washed with brine, dried over anhydrous magnesium sulfate then concentrated in vacuo. The residue is further purified by flash column chromatography on silica gel (hexane/ethyl acetate 4:1 ratio) to afford 4-(4-ethyl-4′-ethynylbiphenyl-3-yl)-2,2,6,6-tetramethylpyran-3,5-dione (0.070 g) as a yellow solid.

Provenance & Evidence