Potassium Carbonate → HCID 59997913, compound

Participants

Reaction Steps

The crude sulfone prepared in Step 6 (6.7 mmol) is suspended in 220 mL of MeOH-acetonitrile (2:1) and heated to reflux. Solid K2CO3 (3.4 g, 25 mmol) is then added, and the mixture stirred at reflux for 2 h. Upon cooling, the solution is filtered and the filtrate concentrated. The residue is dissolved in 50 mL of EtOAc—2.5% aq. NaHCO3 (1:1), the layers separated, and the aqueous phase extracted with more ethyl acetate. The combined organic layers are washed with brine and dried (MgSO4), filtered and concentrated. The resulting crude product is purified by column chromatography (0–2% MeOH—CH2Cl2) provided the title compound as a foam.

Provenance & Evidence