Phthalic Anhydride → HCID 117770562, compound

Participants

Reaction Steps

A mixture of 3-amino-5-(2-chlorophenyl)-6-(hydroxymethyl)-1,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-one obtained in Step H (450 mg), phthalic anhydride (321 mg) and 1,4-dioxane (5.20 mL) was refluxed overnight, and cooled to room temperature. The resulting solid was collected by filtration, and washed with ethyl acetate to give the title compound (320 mg).

Provenance & Evidence