New route to carbonate-functionalized imidazolium and pyrrolidinium-based ionic liquids.

Authors :: Srour, H.
Darwich, W.
Lindl, F.
Husson, P.
Rouault, H.
Santini, C.
Source :: New Journal of Chemistry; 10/21/2017, Vol. 41 Issue 20, p11915-11920, 6p
Publication Year :: 2017
Abstract: A new, versatile, and green route to access ionic liquids containing carbonate groups, including 1-[2-(propyloxycarbonyloxy)ethyl]-3-methyl imidazolium and N-methyl-N-[2-(propyl-oxcarbonyl) ethyl] pyrrolidinium associated with a bis(trifluoromethane)sulfonimide anion, [C1(C<subscript>2</subscript>O(CO)OC<subscript>3</subscript>)Im][NTf<subscript>2</subscript>] (4) and [C<subscript>1</subscript>(C<subscript>2</subscript>O(CO)OC<subscript>3</subscript>)Py][NTf<subscript>2</subscript>] (5), has been developed and characterized. The key point of this route is to avoid the metathesis reaction step with LiNTf<subscript>2</subscript>, which could result in ionic liquids that are highly contaminated with LiCl salt through the coordination of lithium ions by the carbonate group. [ABSTRACT FROM AUTHOR]

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