Water → HCID 57998836, compound

Participants

Reaction Steps

Crude 7-(3,4-dichlorophenyl)-8-hydroxy-5H-pyrido[2,3-b]pyrazin-6-one (0.13 g) was heated in acetic anhydride (10 mL) for 3 hours and then allowed to cool and stored at ambient temperature for 16 hours. The reaction mixture was poured onto ice and water, stirred vigorously and extracted with ethyl acetate. The organic extract was washed with water and concentrated. The residue was purified by column chromatography on silica gel (eluent: ethyl acetate/hexane 1:1) to give Compound B29 of Table B as a yellow solid (0.077 g).

Provenance & Evidence