5300. Ketipic Acid

Nomenclature

CAS number: 533-76-6
3,4-Dioxohexanedioic acid; 2,3-diketoadipic acid; oxalodiacetic acid.
C6H6O6; mol wt 174.11.
C 41.39%, H 3.47%, O 55.14%.

Description and references

Prepn: Fittig et al., Ann. 249, 182 (1888); Stachel, Arch. Pharm. 295, 735 (1932); 296, 479 (1963). Structure studies; occurs in the solid form as the γ-lactol: Stachel, Ann. 689, 118 (1965).

Chemical structure

Properties

Dec at 150° forming diacetyl. Sparingly sol in ether. Sol in glacial acetic acid, concd hydrochloric acid. Practically insol in water, alc, chloroform, CS2, benzene, petr ether.

Derivative

Diethyl ester.
C10H14O6; mol wt 230.21.
C 52.17%, H 6.13%, O 41.70%.

Properties

Prisms from alcohol, mp 83°. bp30 230°. Soluble in ether, chloroform.