Process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol
AssigneePCUK Produits Chimiques Ugine Kuhlmann
InventorsSerge Y. DeLavarenne, Pierre Tellier
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Abstract
A process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol, in which catalytic hydrogenation of 1,4,4a,9a-tetrahydro-anthraquinone is carried out in the liquid phase to give 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione followed by isomerization of the latter in the presence of an acid to give 1,2,3,4-tetrahydro-9,10-anthracene-diol.
Claims10
A process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol from 1,4,4a,9a-tetrahydroanthraquinone which comprises effecting a catalytic hydrogenation in the liquid phase of 1,4,4a,9a-tetrahydroanthraquinone to convert it into 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione or into a mixture of 1,2,3,4-tetrahydro-9,10-anthracene-diol and 1,2,3,4,4a,9a-hexahydro-9,10-anthracene dione, and then effecting isomerization of the latter in the presence of an acid to give 1,2,3,4-tetrahydro-9,10-anthracene-diol.
Dependencies are inferred from the claim text.