Process of producing adamantanols
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsMinoru Kakuda, Takanobu Okamoto, Takashi Onozawa, Hiroshi Kurata
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Abstract
Adamantanols are produced in high selectivity and high yields by hydroxylation of adamantane compounds in a specific two-phase solvent system of water and an organic solvent in the presence of a ruthenium compound and hypochlorous acid or its salt. Adamantanediols transfer into the organic phase by adding a specific alcohol to a reaction liquid containing the adamantanols, thereby facilitating extraction of the adamantanediols. The ruthenium compound transfers into the water phase by treating the reaction liquid with alkali prior to the addition of the alcohol and precipitates therein, thereby facilitating the recovery of the ruthenium compound.
Claims14
A process of producing adamantanols comprising a step of hydroxylating an adamantane compound in the presence of a ruthenium compound and hypochlorous acid or its salts, wherein said hydroylation is carried out in two-phase system of water and organic solvent, and wherein an alcohol having 4 to 8 carbon atoms is added to a reaction liquid after the hydroxylation of the adamantane compound, thereby transferring adamantanediols into the organic phase.
Dependencies are inferred from the claim text.