Acetic Anhydride → HCID 67124097, compound

Participants

Reaction Steps

To a solution of the compound obtained in example 6 (31 mg, 0.063 mmol) in anhydrous DMF (3 mL), acetic anhydride (0.007 mL, 0.08 mmol) and anhydrous TEA (0.02 mL, 0.127 mmol) were added. The reaction mixture was stirred at room temperature for 18 h, and the solvent was concentrated off. It was quenched with saturated NaHCO3 aqueous solution (15 mL) and extracted with EtOAc (3×15 mL). The combined organic phases were dried over anhydrous Mg2SO4, filtered and concentrated. The crude residue was flash chromatographed on a silica gel flash system (ISCO Rf) using hexanes/acetone mixtures of increasing polarity as eluent to afford 14.5 mg of the desired compound (57% yield).

Provenance & Evidence