Ethanol → HCID 53988496, compound

Participants

Reaction Steps

Under nitrogen gas atmosphere, acetic anhydride (200 ml) and DMAP (catalytic amount) were added to a solution of Compound 21 (10.5 g, 17.6 mmol) in pyridine (200 ml), and the mixture was stirred for 20 hours. Ethanol was added to the reaction mixture, and it was stirred for 20 minutes. The solvent was then evaporated under reduced pressure. The residue was purified by silica gel column chromatography (toluene:ethyl acetate=4:1) to obtain Compound 22 (9.6 g, 85%).

Provenance & Evidence