Acetic Acid → HCID 20380271, compound

Participants

Reaction Steps

A mixture of 1 part of 3,9-dihydro-3,9-dioxo-1-phenyl-2H-indeno[2,1-c]pyridine-4-carbonitrile, 5 parts of potassium hydroxide, and 39 parts of 1,1-dimethylethanol is heated at the boiling point under reflux for 16 hours. The resultant mixture is diluted with 1000 parts of water, followed by sufficient acetic acid to neutralize the base present. The precipitate which forms is filtered off; consecutively washed with water, methanol, and 1,1'-oxybisethane; and dried in vacuo. The resultant yellow solid is crystallized from aqueous N,N-dimethylformamide to afford 3,9-dihydro-1-phenyl-2H-indeno[2,1-c]pyridine-4-carboxamide melting above 300°. The product has the formula ##STR19##

Provenance & Evidence