2563. Coumarin-3-carboxylic Acid

Nomenclature

CAS number: 531-81-7
2-Oxo-2H-1-benzopyran-3-carboxylic acid.
C10H6O4; mol wt 190.15.
C 63.16%, H 3.18%, O 33.66%.

Description and references

By heating salicylaldehyde with malonic acid in glacial acetic acid. Review: Sethna, Shah, Chem. Rev. 36, 1 (1945).

Chemical structure

Properties

Needles from water, mp 188° (dec). Slightly sol in water; sol in alc, alkalies. Insol in ether, benzene, petr ether.