Acetic Anhydride → HCID 72994532, compound

Participants

Reaction Steps

2.2 mmol of acetic anhydride are added to a solution, cooled to 0° C., of 2 mmol of the compound of Example 4 in 5 ml of anhydrous pyridine. After stirring at ambient temperature for 3 hours, the reaction mixture is concentrated under reduced pressure. Chromatography over silica gel (dichloromethane, and then dichloromethane/methanol: 99/1) allows the expected product to be isolated.

Provenance & Evidence