Method for producing adamantane

Chemistry of hydrocarbon compounds – Alicyclic compound synthesis – Adamantane or derivative

Reexamination Certificate

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C585S734000, C585S741000, C585S747000, C585S748000, C585S749000

Reexamination Certificate

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07488859

ABSTRACT:
A method for producing adamantane includes isomerizing exo-tetrahydrodicyclopentadiene into adamantane in an acidic chloroaluminate ionic liquid composed of aluminum(III) trichloride and a quaternary ammonium halide having a quaternary ammonium cation selected from a group consisting of tetraalkylammonium, dialkylpyridinium, and trialkylimidazolium.

REFERENCES:
patent: 3894099 (1975-07-01), Takaishi et al.
patent: 3944626 (1976-03-01), Honna et al.
patent: 4086284 (1978-04-01), Schneider et al.

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