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Issue 2, 2002

Hydrogensulfate and tetrakis(hydrogensulfato)borate ionic liquids: synthesis and catalytic application in highly Brønsted-acidic systems for Friedel–Crafts alkylation

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Abstract

Hydrogensulfate and tetrakis(hydrogensulfato)borate ionic liquids have been synthesised and characterised. These ionic liquids are halogen-free, available from cheap raw materials and easy to prepare. They have been used as additives to sulfuric acid in the Friedel–Crafts-alkylation of benzene with 1-decene. The results clearly demonstrate an interplay of acidity and solubility effects caused by the ionic liquid additive. In some cases, low amounts of ionic liquid additive result in a dramatic improvement of product yield.

Graphical abstract: Hydrogensulfate and tetrakis(hydrogensulfato)borate ionic liquids: synthesis and catalytic application in highly Brønsted-acidic systems for Friedel–Crafts alkylation

Article information


Submitted
29 Oct 2001
First published
08 Feb 2002

Green Chem., 2002,4, 134-138
Article type
Paper

Hydrogensulfate and tetrakis(hydrogensulfato)borate ionic liquids: synthesis and catalytic application in highly Brønsted-acidic systems for Friedel–Crafts alkylation

P. Wasserscheid, M. Sesing and W. Korth, Green Chem., 2002, 4, 134 DOI: 10.1039/B109845B

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