Acetic Anhydride → HCID 67171277, compound

Participants

Reaction Conditions

Reaction Steps

0.2 mL of acetic anhydride was added to pyridine (2 mL) solution of 50 mg of 2-allyl-1-(6-aminopyridin-2-yl)-6-{[4-(4-methylpiperazin-1-yl)phenyl]amino}-1,2-dihydro-3H-pyrazolo[3,4-d]pyrimidin-3-one obtained in Example 50, and stirred at 50° C. for 6 hours. After this was concentrated under reduced pressure, saturated sodium hydrogencarbonate solution was added thereto, extracted with chloroform, and the organic layer was washed with saturated saline water and dried with anhydrous sodium sulfate. The solvent was evaporated away under reduced pressure, and the resulting residue was purified through preparative basic thin-layer chromatography (chloroform/methanol=40/1) to obtain 47 mg of the entitled compound as a yellow solid.

Provenance & Evidence