Acetic Anhydride → HCID 68706056, compound

Participants

Reaction Steps

Add acetic anhydride (53 mg, 0.52 mmol) to a solution of alcohol 25 (200 mg, 0.52 mmol), Et3N (0.14 mL, 1.03 mmol), and DMAP (6 mg, 0.052 mmol) in CH2Cl2 (5 mL) and stir the reaction at room temperature for 1 hour. Dilute the solution with EtOAc and wash with H2O, saturated aqueous sodium bicarbonate and brine. Dry (Na2SO4), filter and concentrate the solution in vacuo. Purify the product by flash chromatography (10 g SiO2, 40 mL/min, 0-40% EtOAc/Hexanes over 20 minutes and then 40% EtOAc/Hexanes for 13 minutes) to afford acetate 42 (183 mg, 0.43 mmol, 83%) as a yellow oil. HRMS(FAB+) calcd for C24H28O7: 428.1835; found: 428.1833 (M+).

Provenance & Evidence