13-09245. Terpenylic Acid [Archived]

Nomenclature

CAS number: 26754-48-3
Tetrahydro-2,2-dimethyl-5-oxo-3-furanacetic acid; 3-(1-hydroxy-1-methylethyl)glutaric acid γ-lactone; tetrahydro-5-keto-2,2-dimethyl-3-furanacetic acid; terpenolic acid.
C8H12O4; mol wt 172.18.
C 55.81%, H 7.02%, O 37.17%.

Description and references

Prepd from α-terpineol, terebic acid, or terpin hydrate: Suga, Sakoda, J. Sci. Hiroshima Univ. Ser. A 22, 69 (1958), C.A. 53, 10273f; Lipp et al., Ann. 644, 37 (1961). Resolution of optical isomers: Fredga, Sandberg, C.A. 52, 11747g (1958).

Chemical structure

Derivative

Monohydrate.

Properties

Prisms, mp 57°. When anhydrous, melts at 90°. Sublimes 130-140°. Moderately sol in cold water; very sol in hot water.

Derivative

(+)-Form.

Properties

mp 92-94°, [α]D25 +56.3°.

Derivative

()-Form.

Properties

mp 92-94°, [α]D25 56.5°.

Status

This monograph has been retired and is no longer subject to revision or update.