SULFONE ROUTES TO STERICALLY HINDERED 7-CIS ISOMERS OF VITAMIN A. NEW GEOMETRIC ISOMERS OF VITAMIN A AND CAROTENOIDS 10.

Article abstract of DOI:10.1016/0040-4039(81)80112-8

A study examining the possible use of the C₁₃ + C₇ and the C₁₅ + C₅ routes with an intermediate C₂₀-sulfone to the hindered 7-cis isomers of vitamin A showed that the latter route is useful for preparation of the 7-cis and the 7-cis,13-cis isomers.