Malonic Acid → HCID 178524624, compound

Participants

Reaction Steps

5-bromoindoline-2,3-dione (0.250 g) was dissolved in THF (3 ml) in a round-bottomed flask and malonic acid (2 eq) was added. The vessel was connected to a reflux condenser and heated to reflux overnight by conventional heating. After 12 hours, solid precipitate was observed. Suspension was concentrated under reduced pressure to remove solvent, water was added, and the suspension was refluxed for 4 hours. The suspension was then filtered to provide 6-bromo-2-hydroxyquinoline-4-carboxylic acid (0.150 g) as a solid.

Provenance & Evidence