6932. Oxenin

Nomenclature

CAS number: 3230-75-9
11,12-Didehydro-7,10-dihydro-10-hydroxyretinol; 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)nona-2,7-dien-4-yne-1,6-diol.
C20H30O2; mol wt 302.45.
C 79.42%, H 10.00%, O 10.58%.

Description and references

Intermediate in the vitamin A synthesis. Prepn: Isler et al., Helv. Chim. Acta 30, 1911 (1947); Isler, US 2451739 (1948 to Hoffmann-La Roche); Kardys, US 3046310 (1962 to Pfizer).

Chemical structure

Properties

Very viscous yellow oil. d427 0.9984; nD22 1.5344. Has been crystallized, mp 58.5-59°.