Process for the preparation of ionic liquids with alkyl...

Details Process for the preparation of ionic liquids with alkyl... Process for the preparation of ionic liquids with alkyl...

2005-10-28

2010-02-02

Davis, Zinna N (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C544S180000, C548S335100, C548S373100, C564S080000

Reexamination Certificate

active

07655803

ABSTRACT:
The invention relates to a process for the preparation of ionic liquids of general formula (cation)(R′—O—SO3). The process includes the step of treating the compound of formula (cation)(R—O—SO3) with an alcohol, or mixture of different alcohols, of the formula R′—OH optionally in the presence of a catalyst to form the desired ionic liquid and the by-product R—OH, which is optionally removed during the reaction or after completion of the reaction. The compound of formula (cation)(R—O—SO3) can be prepared by alkylating a tertiary or aromatic amine with a dialkylsulfate.

REFERENCES:
International Preliminary Examination Report (PCT/EP2004/050619 filed Apr. 27, 2004; Wasserscheid et al.).

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