Formation of chromenols on alumina from quinones having an isoprenoid side chain

Publisher Website
Google Scholar
Abstract
.The work of Links (1960) has been repeated. Ubiquinone left in contact with Grade O alumina overnight is partially converted into ubichromenol and at least two other products. The ubichromenol fraction thus made is highly coloured and difficult to purify. By adsorbing ubiquinone on acid-washed Brockmann Grade 2 alumina for 2-3 days, ubichromenol can be formed with no other major products, and the recovery of unchanged quinone is high. The ubichromenol is similar in color to the natural material and is relatively easy to purify. Solanachro-mene has been made by adsorbing koflerquinone on acid-washed Grade O alumina partially deactivated with 10% of water. Adsorption of vitamin K1 on acid-washed Brockmann Grade 2 alumina gave a product which may be a chromenol related to naphthatocopherol.

This publication has 3 references indexed in Scilit: