Geometric Isomers of 11,12-Dehydro-15-demethyl-β-axerophtene. New Geometric Isomers of Vitamin A and Carotenoids. III

V. Ramamurthy; R. S.H. Liu

doi:10.1021/jo00911a041

Geometric Isomers of 11,12-Dehydro-15-demethyl-β-axerophtene. New Geometric Isomers of Vitamin A and Carotenoids. III

V. Ramamurthy, R. S.H. Liu

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

In connection with the photochemical studies of the polyenes in the vitamin A series,³ we were in need of a complete set of geometric isomers of such a pentaene. The compound 11,12-dehydro-15-demethyl-β-axerophtene (I) was chosen because it has only four isomers and a procedure to the all-trans isomer is in the literature.⁴ A modification of this procedure may lead to the other isomers. The preparation and spectroscopic properties of all four isomers of I including the two sterically crowded 7-cis isomers, are now described here.

Original language	English (US)
Pages (from-to)	3460-3462
Number of pages	3
Journal	Journal of Organic Chemistry
Volume	40
Issue number	23
DOIs	https://doi.org/10.1021/jo00911a041
State	Published - Nov 1 1975
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry

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abstract = "In connection with the photochemical studies of the polyenes in the vitamin A series,3 we were in need of a complete set of geometric isomers of such a pentaene. The compound 11,12-dehydro-15-demethyl-β-axerophtene (I) was chosen because it has only four isomers and a procedure to the all-trans isomer is in the literature.4 A modification of this procedure may lead to the other isomers. The preparation and spectroscopic properties of all four isomers of I including the two sterically crowded 7-cis isomers, are now described here.",

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