Method for promoting aluminum chloride catalyzed isomerization of sym octahydrophenanthrene to sym-octahydroanthracene with aryl phenone
AssigneeKoppers Company, Inc.
InventorWilliam T. Gormley
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Abstract
A method is disclosed for promoting isomerization of sym-octahydrophenanthrene (s-OHP) to sym-octahydroanthracene (s-OHA) in the presence of a catalyst provided by aluminum chloride or aluminum bromide, or a mixture of these two compounds. The rate of isomerization is increased by having the reaction run in the presence of an aryl phenone such as benzophenone.
Claims4
In a process for the isomerization of sym-octahydrophenanthrene to sym-octahydroanthracene in the presence of a catalyst comprising AlCl.sub.3 or AlBr.sub.3, or a mixture thereof, the improvement which comprises using an effective amount of an aryl phenone as a promoter to the catalyst to increase the rate of isomerization as compared with the rate of the unpromoted catalyst whereby the isomerization may be carried out at room temperature.
Dependencies are inferred from the claim text.